Thursday, June 28, 2012

Sums and Product

Move the green point to a desired location, and then move the red point and observe what happens.

This is a Java Applet created using GeoGebra from - it looks like you don't have Java installed, please go to


1.) What do the numbers on the side of the rectangle represent? 

2.) What does the number inside the rectangle represent?

3.) What is the relationship among the numbers on the green point and the other numbers?

4.) What is the minimum/maximum number that can be obtained inside the rectangle? 

5.) What does the geometric and algebraic interpretation of the problem above?

Monday, June 25, 2012

GeoGebra launches official blog

GeoGebra recently launched the official  GeoGebra blog  . Theblog will contain the latest news, tips, tricks, and everything about GeoGebra. According to the administrator, The blog will also feature post contributions fro GeoGebra bloggers all over the world. 

Recently, GeoGebra is also starting to integrate theorem proving.

Monday, June 18, 2012

One month leave ends on June 22nd

You are probably wondering why I stopped updating this blog for a month. Well, I am quite busy, so I thought I needed a month off. We have a new curriculum here in the Philippines,  so our institute is working on the new teaching guides and learning packages.  This takes most of my time at work, and for the past month, I am bringing some of my work home.

In addition, I am also growing The Mathematical Palette, my new blog. The blog is not about the 'academics' of mathematics but highlights the 'math is fun' mantra.  Most of my posts there are about the appreciation of the beauty and wonders of mathematics. 

Of course, you have probably seen Mathematics and Multimedia, my most active blog. I post  articles there everyday which is also one of the reasons why I have not updated this blog lately. 

With all that said, vacation is over. I will resume GeoGebra applet blogging this weekend. 

By the way, you are all invited to post your applets here. If you are interested to be a contributor to this blog, you can reach me at