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Guillermo Bautista
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Guillermo Bautista

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Understanding Point of Symmetry
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For GeoGebra fans who are Android users, the long wait is over. GeoGebra has just released the new GeoGebra Graphing Calculator for Android phones and tablets. According to GeoGebra’s officia…
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Story
Introduction
I am a math teacher and a blogger.  Here are my blogs: Math and Multimedia, Math PaletteBlogineeringSchool of Freebies, and GeoGebra Applet Central.
Bragging rights
I maintain 4 blogs and writes about 60 posts a month.
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Gender
Male
Guillermo Bautista's +1's are the things they like, agree with, or want to recommend.
The Algebra and Geometry of Square Root
mathandmultimedia.com

If we have a square with a given area, then we can find the length of its side. For example, a square with area 4 square units has a side le

Take Notes and Scribble with Inkflow Visual Notebook
mathandmultimedia.com

I usually solve problems and organize my thoughts by taking notes while on the go, so I have been looking for a free note taking, scribbling

GeoGebra Graphing Calculator for Android now available
mathandmultimedia.com

For GeoGebra fans who are Android users, the long wait is over. GeoGebra has just released the new GeoGebra Graphing Calculator for Android

4 GeoGebra 5 Updates Teachers Will Love
mathandmultimedia.com

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The Basics of Inverse Proportion
mathandmultimedia.com

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Prepare for Math Contests with MATHCOUNTS Trainer App
mathandmultimedia.com

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Math and Multimedia turns 6
mathandmultimedia.com

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Derivation of the Area of a Rhombus
mathandmultimedia.com

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Proof Without Words: If x >0, x + 1/x >=2
mathandmultimedia.com

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What is the horizontal line test?
mathandmultimedia.com

In January of this year, we have discussed about the vertical line test. We have learned that if a vertical line intersect a graph more than

The Loop Game: Pool in Elliptical Table
mathandmultimedia.com

Mathematics enthusiast and author Allex Bellos has created an elliptical pool table and he named it "The Loop Game." It was supposed to alwa

3 Free Whiteboard Software for Mac Users
mathandmultimedia.com

If you are a Mac user, and if you want to use a whiteboard software in your class or if you want to screencast your lectures, then you can c

How to Add Integers Using the Number Line
mathandmultimedia.com

There are several methods that can be used in adding integers. One of this methods is to use the number line. If you can see the pattern in

A Different Way to Perform Division
mathandmultimedia.com

All of us are familiar with the standard division method. The standard algorithm requires us to divide the highest place values and get the

Slope of Perpendicular Lines Theorem - Proofs from The Book
proofsfromthebook.com

A proof that the product of the slopes of perpendicular lines is -1.

The Sum and Product of Roots Theorem
proofsfromthebook.com

A detailed proof that on the sum and product of the roots of a quadratic equation.

Lesson Study Book 2: Learning More Together
mathandmultimedia.com

Two years ago, our institute, the University of the Philippines National Institute for Science and Mathematics Education Development (UP NIS

MIT Open Courseware: Free Math Videos and Learning Materials
mathandmultimedia.com

In the previous post I have shared to you Khan Academy, a website where you can learn mathematics by watching videos and answering questions

Math and Multimedia got hacked today, twice!
mathandmultimedia.com

Math and Multimedia got hacked today, not only once but twice. The website was redirected to online website selling medicines and drugs. I c

On Equations of Intersecting, Coinciding, and Parallel Lines
mathandmultimedia.com

When we have two lines on a plane, there are three possibilities: the lines will never meet (parallel) the lines will meet at one point (int