Mathematics and Multimedia

Sanjay Guilati (author) has been teaching computer and mathematics in Bhilai , state Chattisgarh in India for 15 years. Currently he is a teacher in a senior secondary school and he is also involved in teacher training. His online work can ̷

Free Downloadable GeoGebra Tutorials in PDF

Published on 2011-07-04 11:01:04

If you want to learn GeoGebra offline, here are the lists of excellent GeoGebra tutorials in portable document format (PDF). These materials are free and available for download. I. GeoGebra Workshops from GeoGebra Institute of Ohio WS 1: Intro,

Order of Operations: 360 or 354?

Published on 2011-07-03 11:01:12

Last Saturday, I received Facebook message from a student asking help to simplify . He got but his teacher’s answer was . Although the problem above seems simple, a lot of students get confused by it, and in this case, even … Continu

July 2011 Week 1 Post Summary

Published on 2011-07-02 11:02:20

A. Mathematics and Multimedia GeoGebra Sneak Peek 5: The Computer Algebra System How to add a ‘Like us on Facebook’ box on your blog Addition of Coordinates Cleverbot and other talking computers More examples of proof by contradiction Geo

Geometer’s Sketchpad Essentials Series

Published on 2011-07-01 12:01:09

Before I became a GeoGebra user, I had been a user of Geometer’s Sketchpad (GSP version 4.07) for quite some time. Although I am a great fan of GeoGebra, GSP requires more mathematical maturity to use, and in several aspects, … Continue r

More examples of proof by contradiction

Published on 2011-06-30 11:01:39

We have had good discussions on mathematical proofs, so I am planning to create a mathematical proof series that will discuss the basics such as direct proof, indirect proof, and proof by mathematical induction. But before I do that, let … Co

Cleverbot and other talking computers

Published on 2011-06-29 11:01:10

One of the areas of research in artificial intelligence (AI) is to make computers talk like human beings. A theoretically perfect machine should be able to answer questions that you would mistake it for a human. Several such applications are avail

Addition of Coordinates

Published on 2011-06-28 11:01:04

If we have two points, what will happen if we add their coordinates? If point has coordinates and point has coordinates , then . It seems that there is nothing special about these points, but let us look at their … Continue reading →

How to add a ‘Like us on Facebook’ box on your blog

Published on 2011-06-27 11:01:15

One way to promote your blog is to create a Like us on Facebook box such as the one shown in the first figure. Readers who ‘Like’ your blog will get updates every time you post a new article, so … Continue reading →

GeoGebra 4.0 Sneak Peek 5: The Computer Algebra System

Published on 2011-06-26 11:01:43

This is the fifth post of the GeoGebra 4.0 Sneak Peek Series. One of the major enhancements of GeoGebra 4.0 is the integration of Computer Algebra System (CAS). The GeoGebra CAS window can be viewed by clicking the View>CAS from … Continu

June 2011 Week 4 Summary of Posts

Published on 2011-06-25 11:01:41

Here is the list of posts for the fourth week of June 2011. Hope you enjoy reading! I. Mathematics and Multimedia Generating Pythagorean Triples from Square Numbers Are you a good math teacher? The Experimental and Theoretic Probability Series List &

Free Online Latex Generator

Published on 2011-06-24 11:01:38

If you are doing a lot of Latex coding (writing math equations on the web), you may want to check out CodeCogs.com , an excellent WYSIWYG online Latex editor and generator. In CodeCogs, you can write mathematical symbols by simply … Continue re

Irrational Numbers as Decimals

Published on 2011-06-23 18:00:25

Introduction In Rational and Irrational Numbers post, we have discussed that is irrational. Aside from its radical form, using a calculator or a computer, we can approximate its value; for example, . As we can see, irrational numbers can ̷

Gmail asking for password — be careful!

Published on 2011-06-23 01:20:49

When I opened my email this morning, I received an ‘Identity Verification’ email from ‘Gmail’ (verifiesences@gmail.com), which I think is a hoax. The content of this letter is the following. We have received several complaints

What are RSS Feeds?

Published on 2011-06-22 11:01:09

Introduction When you are reading a book, you use a bookmark to mark a page where you stopped or a page which is important to you. This also happens on the web. You probably have an list of the URLs … Continue reading →

The Experimental and Theoretical Probability Series

Published on 2011-06-21 11:01:59

Last week, we have completed the 5-part Experimental and Theoretical Probability Series. To those who have not read it, below is the list of posts. Experimental and Theoretical Probability Part 1. This post discusses about the sum of the number ̷

You are invited to a GeoGebra Seminar!

Published on 2011-06-20 23:51:56

Title: Seminar-Workshop on Using Geogebra in Teaching and Learning Mathematics Date: August 6, 13, & 20, 2011 (Saturdays) Time: 8:30 – 12AM, 1:00 – 4:30 PM Venue: Teaching and Learning Laboratory, Vidal Tan Hall, UP NISMED DESCRIPTIO

Are you a good math teacher?

Published on 2011-06-20 11:01:33

Here is a list I found in a research paper about good teaching practices, and I think most of us teachers will agree on these. A good teacher raises questions that give for all students to contribute an answer; makes … Continue reading →

Generating Pythagorean Triples from Square Numbers

Published on 2011-06-19 11:01:25

A figurate number is a number that can be represented by a regular geometrical arrangement of equally spaced points (or circles as shown in the first figure). If the arrangement forms a regular polygon, the number is called a polygonal number. Exam

June 2011 Week 3 Posts Summary

Published on 2011-06-18 11:01:26

Here are the summaries of posts for my three blogs this week. A. Math and Multimedia The GeoGebra 4.0 Sneak Peek Series 5000 free math, physics, and engineering video tutorials and lectures List of Math and Multimedia Carnivals The Seven … Cont

Guest Post: Vedic Mathematics 2 – Squaring Numbers Ending in 5

Published on 2011-06-17 11:01:02

Sanjay Guilati (author) has been teaching computer and mathematics in Bhilai , state Chhattisgarh in India for 15 years. Currently he is a teacher in a seniorsecondary school and he is also involved in teacher training. Sanjay is the writer of &

Exploring the Universe with WorldWide Telescope

Published on 2011-06-16 11:01:43

If you have enjoyed exploring Earth with Google Earth and the stars with Stellarium, another stunning program that you should see is the Worldwide Telescope. WorldWide Telescope (WWT) enables your computer to function as a virtual telescope, bri

GeoGebra 4.0 Sneak Peek 4: Graphing Inequalities

Published on 2011-06-15 11:01:16

The long wait is over. GeoGebra 4.0 can now graph inequalities as shown in Figure 1. You can construct the graph above by typing the following in the Input bar pressing the ENTER key after each inequality. The symbol <= … Continue reading &

The Seven Bridges of Königsberg

Published on 2011-06-14 11:01:04

The city of Königsberg, Prussia (now Kaliningrad, Russia) was set on both sides of the Pregel river. There were two islands on the river and there were seven bridges connecting them and the main land as shown in Figure 1. … Continue readin

List of Math and Multimedia Carnivals

Published on 2011-06-13 11:01:51

The Math and Multimedia Carnival 12 is now live at Mathematics for Teaching. The Carnival is now one year old, and the complete list is shown below. Carnival 1 at Math and Multimedia Carnival 2 at Math and Multimedia Carnival … Continue readi

5000 free math, physics, and engineering video tutorials and lectures

Published on 2011-06-12 11:01:30

Here are the collections of sites with math, physics, engineering, and other sciences video tutorials. Some sites also contains non-science videos as well. If you find a site with more than 50 videos, please inform me so I could include … C

The GeoGebra 4.0 Sneak Peek Series

Published on 2011-06-11 17:11:47

GeoGebra 4.0 will be released by the end of August 2011. In preparation fo the release of the software, I have created a series called GeoGebra 4.0 Sneak Peek Series. The series is an overview of the new feature of … Continue reading →

June 2011 Week 2 Summary

Published on 2011-06-11 11:02:57

Here is the summary of posts for the second week of June 2011. 1.) Mathematics and Multimedia Some thoughts on Teaching Math using Wolfram Alpha in teaching math GeoGebra 4.0 Sneak Peek 3: The New Text Tool How to add … Continue reading →

School of Freebies and other announcements

Published on 2011-06-10 23:19:26

School of Freebies to continue I decided to discontinue School of Freebies, but someone volunteered to help, so it’s back. However, it will continue at its original URL in Blogspot. You can follow School of Freebies at its new RSS feed ̷

Experimental and Theoretical Probability 5

Published on 2011-06-10 11:01:33

This is the fifth and the final part of the Experimental and Theoretical Probability Series. In this post, we are going to summarize what we have discussed in the previous four posts, and we are going to talk about some … Continue reading

101 Blog Tips 3: Blog Structure and Design Tips

Published on 2011-06-09 11:01:27

This is the third part of the 101 Ways to Promote Your Blog for Free Series. The first part are about the things to do before starting a blog and the second part is things to do during the early … Continue reading →

Blog Carnival 12 Reminder

Published on 2011-06-09 07:07:22

The Math and Multimedia Carnival is on its 12th edition. If you have a blog post about K-12 mathematics or mathematics teaching, I would like to invite you to submit your article to the Math and Multimedia Blog Carnival. The … Continue read

The Top 10 iPod Touch Apps to Use in Math Class

Published on 2011-06-08 11:01:12

Note: This post links to another article. Finding free iPod Touch apps and games to use in Math classes can be a frustrating and time consuming venture. Many have limited functionality or are littered with ads for the paid versions. … Continue

How to add a ‘Follow me on Twitter’ button on your blog

Published on 2011-06-07 11:01:03

Twitter is one of the most popular microblogging site and an excellent place for sharing finds on the internet. That is why it is highly recommended for promoting blogs. In this post, I am going to teach you how to … Continue reading →

GeoGebra Sneak Peek 3: The New Text Tool

Published on 2011-06-06 11:01:58

This is the third posts in the GeoGebra 4.0 Sneak Peek Series. The first two posts discussed about the new tools and the graphical interface. In this post, we are going to discuss the changes made on the GeoGebra Text … Continue reading →

Some thoughts on using Wolfram Alpha in teaching math

Published on 2011-06-05 11:01:27

My main work at our institute is to find ways on how to integrate technologyparticularly free software and Web 2.0 applications in teaching mathematics. Recently, I have been thinking of integrating Wolfram Alpha in teacher trainings, but I can̵

June 2011 Week 1 Summary

Published on 2011-06-04 11:01:32

Hi everyone. Here is the summary of posts on our first week in a new server. GeoGebra 4.0 Sneak Peek 2: Graphical User Interface Sreenr: An excellent screencasting website Simon’s Factoring Trick 101 Blogging Tips: Things to do during the ̷

Regular Tessellations: Why only three of them?

Published on 2011-06-03 11:01:56

In Tessellations: The Mathematics of Tiling post, we have shown and discussed that there are only three regular polygons that can tessellate the plane: squares, equilateral triangles, and regular hexagons. From Figure 1, we can see why this is so. T

101 Blog Tips Part 2: Things to do during the early stage of blogging

Published on 2011-06-02 11:01:09

In the previous blog tips post, I have given you 7 tips on what to consider and what to do before starting a blog. By now I assume that you have already decided what topic to write about, and you have chosen … Continue reading →

Announcement: GeoGebra Seminar Batch 2 in August

Published on 2011-06-01 19:21:39

I would like to invite all high school and college mathematics teachers to attend the 3-day GeoGebra Level 1 Seminar-workshop which will be conducted on August 6, 13, 20, 2011 (Saturdays) in UP NISMED, UP Diliman. This training is designed … Co

Carnival 12 Deadline of Submission

Published on 2011-06-01 11:01:14

Time flies fast indeed. The Math and Multimedia Blog Carnival is now one year old! The birth month edition will be hosted by Mathematics for Teaching blog by Erlina Ronda. To submit your articles to the carnival, click here. The deadline of ̷

Simon’s Favorite Factoring Trick

Published on 2011-05-31 11:01:02

When I was quite younger, one of my hobbies was joining internet forums (fora?) on problem solving. I was not really good at it, so my role was only to ask questions. One of the internet forums I joined was … Continue reading →

Screenr: An excellent screencasting website

Published on 2011-05-30 11:01:14

If you have used Jing, or CamStudio before, you may also want to check out Screenr, an excellent screencasting website. The video below will explain more. Screenr is web-based, both compatible with Windows and Mac, and above all free.

GeoGebra 4.0 Sneak Peek 2: The Graphical User Interface

Published on 2011-05-29 11:01:51

Note: This is the second part of the GeoGebra Sneak Peek Series. The first part is about the GeoGebra 4.0 New Tools. GeoGebra 4.0 has not only improved by adding additional tools and features, there are also “minor” changes which … Continue

May 2011 Week 4 Summary and more …

Published on 2011-05-28 23:56:23

Math and Multimedia is now on a new server — thanks to Hew, WordPress Happiness Engineer, for transferring the blog. I. We have a new email subscription box at the right courtesy of Google’s Feedburner. Your emails have been transferred

Platonic Solids: Why only five of them?

Published on 2011-05-27 11:01:44

Regular polygons are polygons with congruent sides and congruent interior angles. In three dimensions, the equivalent of regular polygons are regular polyhedra — solids whose faces are congruent regular polygons. The most common regular pol

Email Subscribers: Instruction on how to continue your subscription after the transfer

Published on 2011-05-26 08:30:26

Unfortunately, the hosted version of Math and Multimedia will no longer have the same database for storing emails. Starting now, I will transfer all your emails to Feedburner (this is the only solution I can think of right now). This … Continue

Calculus 1 Video Lectures

Published on 2011-05-25 11:01:57

I found a set of good calculus video lectures recently. Students who are taking Calculus and to those who want to review calculus, I think it’s a good material. Enjoy learning! Filed under: High School Mathematics Tagged: calculus help video, &

Reminder: Math and Multimedia is moving

Published on 2011-05-25 08:06:11

Math and Multimedia is moving to a different server on Saturday, May 28 (in the Philippines) and Friday, May 27 (in the US) to serve you better. The blog MIGHT be in maintenance mode for at most 24 hours. However, … Continue reading ͛

Intersections of Planes with Google Sketchup

Published on 2011-05-24 11:01:24

At the information age, most of the younger generation of teachers cope up, but the not-so-young sometimes prefer the old ways. Nevertheless, great teachers are just great, no matter how they teach. One of my professors (Matrix Algebra), despite bein

Guest Post: Introduction to Vedic Mathematics

Published on 2011-05-23 11:01:35

Sanjay Guilati (author) has been teaching computer and mathematics in Bhilai , state Chhattisgarh in India for 15 years. Currently he is a teacher in a senior secondary school and he is also involved in teacher training. Sanjay is the … Con

Experimental and Theoretical Probability Part 4

Published on 2011-05-22 11:01:47

This is the fourth part of the Experimental and Theoretical Probability Series. Click the following to view the other parts of this series: Part I, Part II, Part III. *** In the previous posts in this series, we have experimented … Continue rea

May 2011 Week 3 Posts Summary

Published on 2011-05-22 01:07:57

Reminder: Math and Multimedia will be moving to a different server on Friday. For more information, click here. A. Mathematics and Multimedia GeoGebra 4.0 Sneak Peek – Part I: New Tools Conrad Wolfram: Teaching kids real math with computers Mat

Math Teachers at Play 38

Published on 2011-05-20 11:01:55

Welcome to the May 20, 2011 edition of Math Teachers at Play. Before beginning the carnival, let us have some interesting facts about 38. The sum of the squares first three primes The number of years it took the Israelites to … Continue readin

101 Blog Tips Part I: Things to do before starting a blog

Published on 2011-05-19 11:01:59

This is the first part of the 101 Ways to Promote your Blog for free, a series about blogging tips and promotion. In this post, we will discuss some things to do and to consider before starting a blog. I … Continue reading →

GeoGebra Seminars: Batch 1 done, batch 2 in July

Published on 2011-05-18 11:01:50

We have just finished training 41 teachers from all over the Philippines on GeoGebra Basics. The first group was composed of 21 teachers from Luzon and Mindanao. The seminar was titled Seminar-Workshop on Using GeoGebra in Teaching and Learning

Store, share, and sync with Drop Box

Published on 2011-05-17 11:01:25

Before, I have shared to you some free online storage websites that you can use to store your files. Skydrive for instance, offers 25GB of free online storage, while Google also offers more than 7GB. Recently, I discovered something even … Co

Math and Multimedia Carnival 11 is live

Published on 2011-05-16 16:55:24

The Mathematics and Multimedia Carnival 11 is now online at Love of Learning Blog. The next blog carnival will be hosted by Mathematics for Teaching and will be posted on June 13, 2011. You may submit your articles here. To increase the chance

Conrad Wolfram: Teaching kids real math with computers

Published on 2011-05-16 11:01:04

This is a brilliant talk by Conrad Wolfram on using computers in teaching mathematics. This talk describes the problems in mathematics education nowadays: the wide gap between math taught in schools and math in the real world, misconceptions about

GeoGebra 4.0 Sneak Peek: Part I – New Tools

Published on 2011-05-15 11:01:56

This is the first part of the GeoGebra 4.0 Sneak Peek Series. In this series, we are going to discuss some of the changes in GeoGebra from version 3.2 to 4.0. If you want to have a complete view of … Continue reading →

Subscribers: Math and Multimedia is moving to a new server

Published on 2011-05-14 19:37:26

Finally, Mathematics and Multimedia is moving to a new server on May 27, 2011 (May 26 in America). All Twitter, Facebook, and Friendfeed subscribers are not affected; you will still continue to receive post updates after the transfer. Also, the ̷

May 2011 Week 2 Posts Summary

Published on 2011-05-14 11:01:30

A. Mathematics and Multimedia GeoGebra Essentials 10 – Exporting GeoGebra Worksheets Promoting your Blog with Math Carnivals Experimental and Theoretical Probability 3 Why Finger Multiplication Works All Time Top 10 Mathematics Posts The Inve

The Inverted Classroom

Published on 2011-05-13 11:01:51

I was browsing several blogs yesterday and I found Robert Talbert’s presentation on Inverting the Classroom, Improving Student Learning. Robert has an excellent presentation of how technology, nowadays, have changed the way of teaching and lear

All-time Top 10 Mathematics Posts

Published on 2011-05-12 11:01:01

Here are the All-time Top 10 Mathematics posts when it comes to number of hits. Try reading the documents to see why they are popular. How to use the summation symbol Tessellation: The Mathematics of Tiling An extensive explanation about … Co

Why Finger Multiplication Works

Published on 2011-05-11 11:01:28

In the Finger Multiplication post, we have learned how we can cleverly multiply numbers from 6 to 10 using our fingers without memorizing the multiplication table. In this post, we will discuss the reason why this method works. The proof …

Experimental and Theoretical Probability Part 3

Published on 2011-05-10 11:01:08

This is the third part of the Experimental and Theoretical Probability Series. In the second part of this series, we have observed in three different experiments that if two dice are rolled, it seems that the probability of getting the … Contin

Promoting your Blog with Math Carnivals

Published on 2011-05-09 11:01:14

Joining Math Carnivals is one of the most effective ways of promoting your blog. This month, you will have a chance to promote your blog here in Math and Multimedia. I will be hosting the 37th edition of the Math … Continue reading →

GeoGebra Essentials 10 – Exporting GeoGebra Worksheets

Published on 2011-05-08 11:01:27

This is the final tutorial of the GeoGebra Essentials Series. We have already learned how to export a GeoGebra file to dynamic HTML, so in this tutorial, we are going to learn how to export a GeoGebra worksheet to static … Continue reading U

May 2011 Week 1 Summary

Published on 2011-05-07 11:01:46

To lessen my burden of archiving later, I have decided to summarize the posts of my three blogs every weekend. So from now on, you will be receiving weekly summary of posts every Sunday. Math and Multimedia Invitation to Join … Continue reading

7 ways to follow Math and Multimedia

Published on 2011-05-06 18:06:16

If you like Math and Multimedia and want to receive updates every time a post is made, here are seven ways to do it: 1.) Follow Math and Multimedia on Twitter. 2.) Math and Multimedia Facebook Page. This will take … Continue reading ͛

8 Free Tools for Teachers from Microsoft

Published on 2011-05-06 11:01:10

Microsoft has been doing its share recently in the free software category. Here are some of its free products and add-ons that maybe useful for teachers. Interactive Classroom - lets teachers insert polling questions into PowerPoint presentations

Would you have made it into Harvard in 1869?

Published on 2011-05-05 11:01:29

If you think your tough in math and can pass the 1869 Harvard math exam, don’t rejoice so much because there are other subjects as well. Other subjects included are History and Geography, Latin Grammar, English to Latin Translation, Greek ̷

Winmat Tutorial 1 – Adding, subtracting, and multiplying matrices

Published on 2011-05-04 11:01:32

In the Free mathematics software list post, I have introduced to you WinMat, one of the math software developed by Philip Exeter University. Winmat (Windows) is a free software that allows users to edit and calculate integer, real, and complex matri

The WordPress Blogging Tutorial Series

Published on 2011-05-03 17:24:43

WordPress is considered by many as one of the best blogging sites and platforms today. The WordPress Blogging Tutorial series is a series of step by step tutorials on how to blog in WordPress.com. This tutorial is dedicated to absolute … Co

Win yourself an iPod!

Published on 2011-05-03 03:37:45

This is a guest post from one of my partner bloggers, William Emeny, of Mathsmaster.org. Mathsmaster.org is still new but growing very quickly as more and more people visit and enjoy the site! As we go on this amazing journey aiming … Continue

Wikispaces and GeoGebra

Published on 2011-05-02 11:01:35

An excellent presentation and tutorial by Dr. Linda Fahlberg about Wikispaces and GeoGebra. Filed under: Teaching Tools, Web 2.0 Technology Tagged: GeoGebra Tutorial, Linda Fahlberg, wikispaces tutorial

Experimental and Theoretical Probability Part 2

Published on 2011-05-01 11:01:08

This the second part of the series of posts on Experimental and Theoretical Probability. In the first part of this series, we used a spreadsheet to simulate the rolling of dice 1000 times and automatically recorded the sums. We have … Continue

Invitation to Join the Math Future Wiki

Published on 2011-04-30 11:01:58

I would like to invite you to join the Math 2.0 Interest Group (Math Future) wiki. This group is an international network of researchers, educators, families, community leaders and technology enablers. We are collaborating on a variety of resea

April 2011 Newsletter

Published on 2011-04-29 11:01:49

I. What’s New First, check out what’s new at Mathematics and Multimedia. Let other people know what’s math to you by answering the Math is survey. I have two new blogs, the School of Freebies which is sharing blog about educationa

SOF has a new URL; Math and Multimedia to a new server

Published on 2011-04-28 17:38:48

To evaluate blogging outside WordPress.com, I have transferred School of Freebies to a new server and a new URL. I also plan to move Math and Multimedia to a new server by June or July this year. After the transfer, … Continue reading →

Calculus Rhapsody

Published on 2011-04-28 11:01:41

A calculus song to the tune of Bohemian Rhapsody by By Phil Kirk & Mike Gospel. I enjoyed it very much. I just wish that the subject was as enjoyable. Thank you Ms. Andrea San Pedro for sharing. Filed under: High … Continue reading

Folding a Hyperbola

Published on 2011-04-27 11:01:24

Below is an activity that uses paper folding to create a parabola. The steps are as follows. First, draw a circle on a piece of paper and draw a point outside the circle. Second, draw a point on any location … Continue reading →

How to create a Facebook page for your blog

Published on 2011-04-26 21:01:52

Facebook is undoubtedly one of the most famous or probably the most famous social networking site, so we will take advantage of its popularity to promote our blog. One easy way to promote a blog is through a Facebook Page. … Continue reading

8000+ Mathematics, Physics, and Engineering Applets

Published on 2011-04-25 19:10:20

Applets are very useful in mathematical explorations, so I made list of more than 8000 applets from 10 different websites and blogs below. I hope you’ll find them helpful. Analyze Math. Tutorials and problems with applets. Cut the Knot. More

The Love of Learning

Published on 2011-04-25 11:01:30

I want to introduce a new partner blog, the Love of Learning blog.The Love of Learning Blog, by Kristi Grande, is written for Middle School Math teachers. This blog explores teaching strategies, activities, and technology applications for Middl

Math Easter Egg

Published on 2011-04-25 05:18:12

Happy Easter everyone. I am just sharing a math egg I found in Flickr. Filed under: High School Mathematics Tagged: easter, easter sunday, flickr photos, free easter egg photos, math easter eggs

Experimental and Theoretical Probability Part I

Published on 2011-04-24 11:01:18

If two standard cubical dice are rolled, one red and one blue, the possible sums ranges from 2 = (1+1) and 12 = (6+6). Now, are the chances of getting these 11 sums equal? For example, is the chance of … Continue reading →

GeoGebra Tutorial 28 – Animation and Hypocycloids

Published on 2011-04-23 11:01:33

This is the 28th tutorial in the GeoGebra Intermediate Tutorial Series. In this tutorial, we are going to construct a hypocycloid using GeoGebra. A hypocycloid is a special curve generated by the trace of a fixed point on a small circle that …

Finger Multiplication

Published on 2011-04-22 18:25:51

I was surprised when I came across with an article on Polish hand magic, a strategy for multiplication using the fingers. I remember us doing it when we were in the first grade, but in a slightly different way. Here in our … Continue readin

Holy Week Holiday

Published on 2011-04-19 21:55:46

In commemoration of the Christan Holy Week, I will be on a holiday tomorrow (Maundy Thursday) and the day after (Good Friday). Blogging will resume on Saturday. Have a blessed holiday and may God bless you all. Filed under: Announcement Tagged: chr

Basic Web from 20 Things I learned

Published on 2011-04-19 11:01:01

20 Things I learned is an excellent ebook published by Google that discusses about the basics of web and computing. The topics included among others are HTML, RSS, JavaScript, computing and HTML 5. Security issues topics such as Malware and Phi

101 ways to promote your math blog for free

Published on 2011-04-18 11:01:34

If you have noticed I have started writing posts about blog promotion (see How to automatically import your blog post to your Facebook wall and Basic Blogging Tips 1). This is the sequel of the WordPress Blogging Tutorial Series and the beginning

Mathematics and Multimedia Carnival 10

Published on 2011-04-17 11:01:17

Welcome to the 10th Edition of the Mathematics and Multimedia blog carnival. I hope you have enjoyed the 9th edition posted Virtual Math Tutor. We have very interesting submissions in this edition but before we begin, let’s have some trivia abo

How to automatically import your blog post to your Facebook wall

Published on 2011-04-16 11:01:25

One of the best ways to promote your blog is through social networking sites. In the tutorial below, we will learn how to automatically import your blog posts to your Facebook wall through the Notes application. This way, your friends and colleague

SOMEBODY up there pushed me

Published on 2011-04-15 11:17:45

I was one of the youngest in our institute, and there are only a few of us who are about my age. Most of my colleagues are over 50, and one of the hottest topics during break time is about retirement. Some, when they retire, want to travel to oth

Potato chips and mathematics

Published on 2011-04-14 11:01:52

If your math teacher told you that mathematics is everywhere, believe him. Almost all the things that we see around (even things that we do not see) are related to mathematics – even potato chips. Yes, even potato chips. Some potato ch

GeoGebra Advanced Tutorial 9 – Exporting GeoGebra to Moodle

Published on 2011-04-13 11:01:09

Here is a great tutorial from Youtube by the user dstlearn on how to export a dynamic worksheet to Moodle. Filed under: GeoGebra, Software Tutorials Tagged: exporting geogebra to moodle, geogebra advanced tutorial series, geogebra dynamic html, how t

Math and Multimedia 2011 Quarter 1 Top Posts

Published on 2011-04-12 11:01:22

Top 10 Mathematics Posts Applets For Visualizing Isometric and Three Dimensional Views How to use the summation symbol Microsoft Mathematics is now available for free Tessellation: The Mathematics of Tiling The Algebraic and Geometric Proofs of Pytha

An elementary proof of the cosine law

Published on 2011-04-11 11:01:19

The cosine law states that in triangle with side lengths and , the following equations are satisfied: * The discussion below shows how these equations were derived. *** Consider triangle with side lengths , and . Drop an altitude from and let be the

How to embed a Scribd document to a WordPress blog

Published on 2011-04-10 11:01:17

We have learned how to store and share in Scribd. In this tutorial, we are going to learn how to embed a Scribd document on a WordPress blog page. To embed a Scribd document in WordPress do the following: Select the document you want to embed. This w

Math and Multimedia Blog Carnival 10 will be hosted here

Published on 2011-04-09 11:01:10

I hope you have enjoyed last Blog Carnival 9 on Virtual Math Tutor. The tenth edition will be posted here. It will be posted on Monday, April 18, 2011. The deadline of submission is on Sunday, April 16, 2011. You may submit your articles here

Nature by Numbers: Watch and fall in love with math

Published on 2011-04-08 11:06:41

This is a captivating video ‘inspired by numbers, geometry and nature’ and was created by Cristóbal Vila. The video explains the connections between the Fibonacci sequence 1,1,2,3,5,8,13, … (can you see the pattern?), and natur

Math is …

Published on 2011-04-07 11:01:54

JUST FOR FUN (with a hidden motive that I will use the data in an upcoming post), please use the link below to continue the sentence. Math is ______________________. *Click HERE or use the comment box to answer. Please limit your answer phrase to f

Mathematics and Multimedia Carnival 10

Published on 2011-04-07 11:01:17

Welcome to the 10th Edition of the Mathematics and Multimedia blog carnival. We have very interesting submissions in this edition but before we begin, let’s have some trivia about the number 10 from Wikipedia: Ten is the sum of the first 3 pr

Math Exercise, Problem, and Investigation

Published on 2011-04-06 11:29:43

As teachers, it is important that we vary the activities that we give our students. The learning process that takes place in the classroom is obviously, in any way or another, affected by the type of tasks that we give them. Let us differentiate th

GeoGebra summer training and GeoGebra Institute of Manila updates

Published on 2011-04-05 20:13:23

GeoGebra Institute of Metro Manila The GIMM Wiki is now open for collaboration. You can now join the wiki and create a page for your school. If you have created a page, please inform me through gipmanila@gmail.com so that I can include your page to

How to add a Paypal donate button to your blog

Published on 2011-04-05 11:01:35

Many bloggers nowadays are monetizing their blogs. Some sell ebooks, some through advertisements, and others, especially blogs that do charity monetize through donations. Paypal is an easy way of doing accepting payments through transactions or even

Storytelling and Statistics at their finest

Published on 2011-04-04 11:01:01

Statistics is often viewed as a boring subject which is composed of loads of data, graphs, and spreadsheets. If this is your view of statistics, try seeing the video below (both content and graphics), and see if your view of it is the same after wa

March 2011 Top Posts

Published on 2011-04-03 11:01:18

Mathematics Top Posts How to use the summation symbol Tessellation: The Mathematics of Tiling The Algebraic and Geometric Proofs of Pythagorean Theorem Limit by epsilon-delta proof: Example 1 Using Mathematics to Win the Lottery The Inscribed Angle T

Discovering multiplication of integers through patterns

Published on 2011-04-02 14:00:28

Part I: Addition of Integers Part II: Subtraction of Integers Part III: Multiplication and Division of Integers *** We have discussed about addition of and subtraction of integers in the previous posts. In this post, we are going to discuss about mul

Dynamic Statistics with Gapminder

Published on 2011-04-01 11:01:21

Gapminder is a stunning information visualization software for statistical animations. It was created by Hans Rosling and is currently in beta version. Gapminder uses bubbles that animates on the Cartesian plane as time progresses. By default it s

12 year-old genius thinks he can disprove Einstein’s relativity

Published on 2011-04-01 07:47:43

Jacob Barnett, a 12-year old prodigy from Indianopolis, USA, thinks that he can disprove Einstein’s theory of relativity. Mathematicians and physicists from the Institute for Advanced Study — home of math and physics hotshots — conf

What’s new and other updates

Published on 2011-03-31 11:01:49

Here are some of the updates that I have made for the first quarter. I have found ways for you to follow the three blogs. I. Mathematics and Multimedia I have split the Post List tab into three; I have created two more tabs- the Mathematics tab with

Blog Carnival 9 is now online

Published on 2011-03-30 12:52:25

The Mathematics and Multimedia Carnival 9 is now online at Virtual Math Tutor. The next blog carnival will be hosted here. You may submit your articles here. To increase the chance of your article of being published, read the Mathematics and Multi

How to download Math Videos from Youtube

Published on 2011-03-28 11:01:29

You can download a Youtube video using Keepvid. To do this, do the following steps: 1.) Go to the Youtube math video that you want to download. 2.) Copy the video’s URL and go to Keepvid.com. 3.) Next, paste the URL to in the URL text box (f

Math and Multimedia All-Time Top Rated Math Posts

Published on 2011-03-27 11:01:04

Here are the 10 Top-rated math articles of Mathematics and Multimedia. How to use the summation symbol Introduction to Permutations Introduction to Combinations Why is 0! equals 1? The Algebraic and Geometric Proofs of Pythagorean Theorem The Alg

GeoGebra Essentials 8 – Graphs and their Properties

Published on 2011-03-26 11:01:08

GeoGebra Essentials 8 – Graphs and their Properties This is the eight tutorial in the GeoGebra Essentials Series. If you are not familiar with GeoGebra, you may want to read the Introduction to GeoGebra post and earlier tutorials. It contains the

IMPORTANT: To all readers and subscribers

Published on 2011-03-25 23:14:42

Hi everyone. Due to the growing number of articles in this blog, I am trying to “declutter” Mathematics and Multimedia. My apologies if in a few days you will be receiving post lists. If you have noticed, few changes were made: If you loo

WordPress Blogging Tutorial 9 – Finishing Touches

Published on 2011-03-25 11:01:35

We have had eight WordPress tutorials and I think those tutorials are enough to keep your blog rolling. In this post I am going to give you hints on the things that you should do before making a lot of posts. Here are the finishing touches you shou

Building widgets with Wolfram Alpha

Published on 2011-03-24 11:01:18

We have talked about why Wolfram Alpha and why is it so special. Yesterday, I tried exploring widgets and came across with this video on how to build widgets using Wolfram Alpha. Once you have created a widget, you can embed it on your websites.

How to write math equations (integrate Latex) in Blogspot/Blogger

Published on 2011-03-24 04:41:22

The reason why I chose WordPress over Blogspot/Blogger before was because of Latex. Latex as we have discussed is a way to create equations in blogs and websites. Now, we can also write math equations in Blogger (see example) without having to insert

Math Teaches at Play 36 and Carnival of Math 76

Published on 2011-03-23 23:29:56

The Mathematics Teacher at Play 36 is now online at Math Hombre. To view the list of other Math Teachers at Play Carnival, click here. The Carnival of Mathematics #75 is also live at Science Backstage. My post Understanding Fermat’s La

GeoGebra Institute of Metro Manila goes live

Published on 2011-03-23 19:05:16

GeoGebra Institute of Metro Manila (GIMM) is one of the International GeoGebra Institutes (IGI), a non-profit organization behind the free mathematics software GeoGebra. It is the first GeoGebra Institute in the Philippines. The aim of GIMM is for

Military drills and the closure property of real numbers

Published on 2011-03-22 11:01:24

In military drills, we are familiar with the commands that let the soldiers face or turn to certain directions. Left face (sometimes called left turn), right face, and about face are probably the most common commands used. If we are facing north, a l

Blog Carnival 9 Deadline of Submission

Published on 2011-03-20 15:32:16

The Mathematics and Multimedia Blog Carnival is on its ninth edition and will be hosted by Virtual Math Tutor . It will be posted on Monday, March 28, 2011. The deadline of submission is on Saturday, March 26, 2011. You may submit your articles

I don’t promote blogs and websites for money

Published on 2011-03-20 05:03:51

A while ago, I received a letter from a reader saying that she was a bit disappointed about my mention of some blogs in several of my posts. She thinks that some of the blogs are not qualified to be mentioned. I truly appreciate her letter because I

My new blog: School of Freebies

Published on 2011-03-19 17:19:05

I and my colleagues (this includes science and IT teachers and trainers) are using a lot of free resources on the internet and many of them are non-mathematics. Since this blog is only limited to sharing math-related resources, I have created anoth

Free Maths Videos at MathsMaster.org

Published on 2011-03-19 11:01:27

If you have enjoyed Salman Khan’s videos on Youtube, you may want to check out, MathsMaster.org. MathsMaster is a new website and its aim is also to provide free mathematics education through videos. According to William Emeny, one of the autho

Store and publish online for free with Issuu

Published on 2011-03-18 11:01:15

If you have used Google Docs and Scribd, another online storage that you should try is Issuu. Issuu is an online service that allows for realistic and customizable viewing of digitally uploaded material, such as portfolios, books, magazine issues,

Equation of a line: The derivation of y = mx + b

Published on 2011-03-17 11:01:08

We have discussed in context the origin (click here and here) of the linear equation , where and are real numbers. We have also talked about the slope of a line and many of its properties. In this post, we will discuss the generalization of the

Keeping Math Simple’s new URL

Published on 2011-03-15 19:25:25

Keeping Math Simple has changed its name to Mathematics for Teaching. It has also changed its URL (now at http://math4teaching.com/). The author of the blog, Erlina Ronda, is a fellow Filipino. Written below is her blog description. This blog i

Annoucment: Seminar on Teaching with GeoGebra This Summer

Published on 2011-03-14 22:42:45

I would like to invite high school and college mathematics teachers to attend a seminar on the Introductory Course on the Use of GeoGebra in Teaching and Learning Mathematics on May 4-5, 2011, at UP NISMED, University of the Philippines (Diliman)

More than 20,000 mathematics contest problems and solutions

Published on 2011-03-13 11:01:30

Are you a math geek? Do you love solving problems? Do you like joining contests? If you are, then this list is for you. This list contains more than 20 contest problems, many of which, have solutions and answers. Some of the links were taken from m

GeoGebra Advanced Tutorial 8 – Random Numbers and Condition to Show

Published on 2011-03-12 10:01:18

In this tutorial, we will are going to create an exercise applet on plotting points. This exercise is recommended for students who were just introduced to plotting points in the coordinate plane. The user of this applet is going to drag four points

Store and share your math documents with Scribd

Published on 2011-03-11 18:54:53

If you want to store or share your file online other than Google docs, one way of sharing them is through Scribd. Scribd is an online sharing program where you can store and share your documents. Scribd also allows you to embed Scribd-stored docu

Please ignore this post

Published on 2011-03-11 15:26:09

This post confirms my ownership of the site and that this site adheres to Google AdSense program policies and Terms and Conditions. Filed under: High School Mathematics

Math and Multimedia’s new site address

Published on 2011-03-11 05:21:24

Math and Multimedia has a new domain (http://mathandmultimedia.com). You can now update your bookmarks, though, going to the previous address (http://math4allages.wordpress.com) will redirect you to the new one. Filed under: Announcement Tagged:

The Commutativity of Real Numbers

Published on 2011-03-09 10:01:20

In the previous discussion, we have shown that addition of two integers a and b is commutative by considering a and b as lengths of two segments. Joining the two segments is the same as adding the integers. We have shown that, clearly, a + b equa

Introducing GeoGebra Prim Beta

Published on 2011-03-07 10:01:11

GeoGebra Prim is a variant of GeoGebra for primary school and middle school students that will soon be released (probably with GeoGebra 4.0). It is a more simplified version of GeoGebra – no drop down buttons, bigger text, and reduced numbe

Introducing GeoGebra Prim Beta

Published on 2011-03-07 10:01:11

Math and Multimedia Carnival #8 and More

Published on 2011-03-05 10:01:50

The Mathematics and Multimedia Carnival 8 is now online at David Wees’ Blog, and the Carnival of Mathematics 75 is on General Musings. The Mathematics and Multimedia Blog Carnival 9th edition and will be hosted by Virtual Math Tutor. It will b

Math and Multimedia Carnival #8 and More

Published on 2011-03-05 10:01:50

Why mathematics teacher drink part 2

Published on 2011-03-04 10:01:52

If you are wondering why math teachers drink, some of the reasons are shown below. You may also want to look at Why mathematics teachers drink part 1. Photo Credit: Funny Exam Answers Filed under: Fun and Jokes, Math Lite Tagged: funny

Why mathematics teacher drink part 2

Published on 2011-03-04 10:01:52

Operations on Integers – Subtraction

Published on 2011-03-01 10:01:22

We have discussed about addition of integers and its representation as chips. Recall in our previous discussion that a single positive chip added up to a single negative chip is equal to 0. The addition below as we have discussed will give us a not

Operations on Integers – Subtraction

Published on 2011-03-01 10:01:22

Math Teachers at Play #35 (via Let’s Play Math!)

Published on 2011-02-28 23:25:46

The Math Teachers at Play Carnival #35 is now online. It has excellent entries. You may want to check it out. Welcome to the Math Teachers At Play blog carnival — which is not just for math teachers. Do you enjoy math? I hope so! If not, browsi

Math Teachers at Play #35 (via Let’s Play Math!)

Published on 2011-02-28 23:25:46

Limit by epsilon-delta proof: Example 1

Published on 2011-02-26 10:01:51

We have discussed extensively the meaning of the definition. In this post, we are going to learn some strategies to prove limits of functions by definition. The meat of the proof is finding a suitable for all possible values. Recall that the defi

Limit by epsilon-delta proof: Example 1

Published on 2011-02-26 10:01:51

GeoGebra Advanced Tutorial 7 – Embedding Form Controls and JavaScript I

Published on 2011-02-25 10:01:27

We have discussed before how to export a GeoGebra file into dynamic html. In all of our GeoGebra dynamic HTML documents, we have not allowed input from user except by dragging objects within the applet. In this tutorial, we are going to use HTML Form

GeoGebra Advanced Tutorial 7 – Embedding Form Controls and JavaScript I

Published on 2011-02-25 10:01:27

Changing Education Paradigms

Published on 2011-02-22 10:01:56

This presentation discusses the past and current problems of the system of education, which I believe are true in most countries, and the efforts to uplift it. I agree with most of the arguments in this presentation especially the part where, some

Changing Education Paradigm

Published on 2011-02-22 10:01:56

Blog Carnival 8 Deadline of Submission

Published on 2011-02-20 10:01:26

The Mathematics and Multimedia Blog Carnival is on its seventh edition and will be hosted by David Wees. It will be posted on Monday, February 28, 2011. The deadline of submission is on Saturday, February 26, 2011. You may submit your articles

WordPress Blogging Tutorial 8 – Working with Widgets

Published on 2011-02-19 10:01:10

A widget is a web tool that performs a specific task. It can be a clock, a daily weather news, a random quotation generator, and many others. Widgets can usually be embedded in blogs using a short code. It can be a simple HTML, a Javascript, a flash

Operations on Integers – Addition

Published on 2011-02-18 10:56:27

Introduction The set of integers is composed of the negative integers, zero, and the positive integers. The integers can be visualized using the number line (see first figure), a horizontal line, where, by convention (agreed upon by mathematicians)

The Distributive Property

Published on 2011-02-15 10:01:52

Given numbers a, b, and c, we are familiar since elementary grades that a(b+c) = ab + ac. This is what we call the distributive property of multiplication over addition. From commutative property, we also know that xy = yx; therefore, (b + c)a = a(b

How do mathematicians greet happy valentines?

Published on 2011-02-13 10:01:53

Uhm, maybe they give their girlfriends some valentine ‘stuff’ with some hidden math on it. For example, a greeting card with a Sierpinski Triangle decorated with heart fractals such as the one shown below. Or maybe some GeoGe

Google Squared: A new way of searching

Published on 2011-02-12 10:01:07

If you liked my post on Wolfram Alpha, then you will probably like Google Squared. Google Squared is a semantic search engine developed by Google which displays search results in tabular format. The results in tables can be customized, saved, an

The Geometry of Commutativity

Published on 2011-02-11 10:01:18

One of the elementary observations about real numbers is that if we add the two numbers, regarding of the order, their sum is unique. We know that 4 + 3 = 3 + 4. This property is also the same when we multiply. If we have two numbers, regarding of

GeoGebra Essentials 8 – Texts and Variables

Published on 2011-02-08 10:01:35

This is the seventh tutorial in the GeoGebra Essentials Series. If you are not familiar with GeoGebra, you may want to read the Introduction to GeoGebra post and earlier tutorials. It contains the pre-requisites of this tutorial of the series. In the

Carnival of Mathematics #74 and wanted blog hosts

Published on 2011-02-08 00:00:57

The Carnival of Mathematics #74 is now online at Walking Randomly. Enjoy Reading! Mathematics and Multimedia is looking for blog carnival hosts. If you are interested, email me at mathandmultimedia@gmail.com.

Simba sings math

Published on 2011-02-05 10:59:39

Very very funny.

Microsoft Mathematics is now available for free

Published on 2011-02-03 17:40:20

Microsoft Mathematics, a computer algebra system developed by Microsoft Corporation, is now available for free download. Among others, Microsoft Mathematics has the following tools: Equation Solver. Provides step-by-step solutions to solve equation

Math and Multimedia’s charity work

Published on 2011-02-03 01:33:34

This site has exist and has helped a lot of people for over a year. If it has helped you, your help would also be appreciated. You can now use the Paypal donate button at the right. I am planning to do charity work, and part of the donations will be

WordPress Tutorial 7 – Changing the Theme of Your Blog

Published on 2011-02-01 18:57:43

From the previous tutorials, we have learned the basics on creating and editing blogs. In this short tutorial, we are going to learn how to change the theme of your blog. The theme composed of the general appearance of your blog including the hea

Math and Multimedia Carnival # 7

Published on 2011-01-31 17:49:32

Enjoy the Mathematics and Multimedia Carnival #7 via Keeping Math Simple. Welcome to the 7th edition of Mathematics and Multimedia blog carnival. Before we begin Carnival 7, let’s look at some of the trivias about the number seven: The Millennium

Top 100 Tools for Learning for 2010

Published on 2011-01-28 10:28:20

If you have read about the Top 100 Tools for Learning for 2009, here is the Top for 100 Tools for Learning 2010. I use 42 of them. How many tools do you use?

Making Mathematicians 1

Published on 2011-01-27 14:00:53

Notes: This post is actually intended for Filipino readers (but anyone is welcome to read it), so people from other countries might not understand the humor embedded on the article. This is my way of describing the ills of education in our country, a

Pythagorean Triple 2: Generating Pythagorean Triples

Published on 2011-01-25 10:01:20

In the previous math article, we have shown that there are infinitely many Pythagorean triples. In this article, we are going to discuss a very short but effective strategy in generating Pythagorean Triples. A Pythagorean triple is the integer trip

GeoGebra Essentials 7 – Using the Keyboard Commands

Published on 2011-01-22 11:02:20

In the many tutorials that we have learned, we have discussed how to construct mathematical objects such as points, lines, line segments, circles and others using the mouse and the tools in the toolbar. In this post, we are going to learn how to co

Blog Carnival 7 Deadline of Submission

Published on 2011-01-21 17:36:41

The Mathematics and Multimedia Blog Carnival is on its seventh edition and will be hosted by Keeping Math Simple. It will be posted on Monday, January 31, 2010. The deadline of submission is on Friday, January 28, 2010. You may submit your articl

Math Teachers at Play 34

Published on 2011-01-20 10:01:22

Welcome to the 34th edition of the Math Teachers at Play Carnival. Since it is new year, we will be talking about cakes, best of 2010, and calendars. Integers Maria Miller presents some games that could help elementary school students practice order

Math Teachers at Play Blog Carnival Deadline

Published on 2011-01-18 18:30:54

Mathematics and Multimedia will be hosting the Mathematics Teachers at Play Blog Carnival #34. If you have articles or blogs about anything mathematics, you can submit it here. The deadline of submission will be on January 19, 2011, and the post date

The Infinitude of Pythagorean Triples

Published on 2011-01-18 10:01:50

In the Understanding the Fermat’s Last Theorem post, I have mentioned about Pythagorean Triples. In this post, we will show that there are infinitely many of them. We will use intuitive reasoning to prove the theorem. For the 100th time (kidd

WordPress Tutorial 6 – Basic Blogging Tips 1

Published on 2011-01-16 07:39:48

As I have promised before, I will not only teach you how to blog using WordPress, but also help you how to “grow” it. After all, what’s the use of a blog when you are the only one, or only a handful of people are reading it. We have learned t

Understanding the Fermat’s Last Theorem

Published on 2011-01-15 10:01:28

The Fermat’s last theorem is one of the hardest problems in the history of mathematics. The problem was written by Pierre de Fermat in 1637, and it was only solved more than 300 years later — in 1995 by Professor Andrew Wiles. But wha

Calling All Bloggers

Published on 2011-01-14 21:57:54

Miscellaneous GeoGebra Links

Published on 2011-01-11 10:19:30

Here are some excellent resources that you can use if you are teaching and learning GeoGebra. Official Web Page GeoGebra Official Website Geogebra Download Page GeoGebra Wiki. Contains free pools of materials. GeoGebra Know How. A list of GeoGebra tu

GeoGebra Basic Construction 7 – Rhombus

Published on 2011-01-08 10:01:25

This is the seventh tutorial in the GeoGebra Basic Construction Series. If you are not familiar with GeoGebra, you may want to read the Introduction to GeoGebra post and prior tutorials in the series. They contain the pre-requisites of this tutorial.

WordPress Blogging Tutorial 5 – Embedding Videos and More

Published on 2011-01-07 10:01:20

In tutorial 2, we have discussed how to insert image in you WordPress blog, and in tutorial 4, we have discussed how to link texts to other files on the internet. In this tutorial, we are going to learn how to embed videos in our WordPress blog. In

GeoGebra Advanced Tutorial 3 – Embedding GeoGebra worksheets in Wikispaces

Published on 2011-01-04 21:33:36

Dr. Linda Fahlberg has created an excellent tutorial on embedding GeoGebra in Wikispaces. Dr. Falhberg has been a user and tutorial developer of GeoGebra even before I started learning it. The links below are her GeoGebra wikis: GeoGebraWiki in Wikis

Corresponding Angles of Similar Objects

Published on 2011-01-02 10:01:10

In this post, one property of similar objects. In the previous article, we have discussed that if we want to preserve the appearance of our picture or object (that is without being stretched), we will have to enlarge or reduce it with the same propor

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