## GeoGebra 4.4 is Now Available

Today, GeoGebra 4.4 has been released. I had just a short time exploring the new version, but one of the obvious changes is the addition of the GeoGebraTube menu in the menu bar. In addition, here if you use the new version, here are some of the changes that you will observe in your first few use.

• GeoGebra Sign-in option to let you stay Signed in while working
• Larger Check box, Command button, and Slider
• Export to HTML was replaced with Upload to GeoGebraTube (Press Ctrl-Shirt-M to explore Java/HTML5 to clipboard)
• New Filling styles

For those who have not tried using GeoGebra, it’s an amazing software for teaching and learning mathematics. You can visit the official GeoGebra website to know more about it and download the software for free.  If you want to learn using it, I have written more than 50 tutorials about it.

To know more about the features of the new version, you can read the GeoGebra 4.4 Release Notes.

## 5 Misconceptions About Rational Numbers

Before, I discuss the misconceptions, let us recall the definition of rational numbers. A rational number is a number that can represented by the fraction $\frac{a}{b}$ where $a$ and $b$ are integers and $b$ not equal to 0. From this definition and other previously learned concepts, let us examine the following misconceptions about rational numbers.

Misconception 1 : Zero is not a rational number.

Truth: YES, it is. Zero, and negative and positive integers are all rational numbers. For example, $0 = \frac{0}{1}$, $-5 = \frac{-5}{1}$, and $100 = \frac{100}{1}$ are all fractions whose numerators and denominators are integers and denominator 1 (which is clearly not equal to 0). » Read more

## Video Lecture: Beauty and Truth in Mathematics and Science

This video is a lecture on the Beauty and Truth in Mathematics and Science.  Professor Robert May of Oxford talks about the beauty of mathematics and its connection to real life problems. I think it is a good watch for all mathematics students and enthusiasts.

Professor May highlighted the importance of  Euclidean Geometry, Complex Numbers, Fractals, Relativeity and more. He also cited the works of mathematicians particularly Paul Dirac.

Enjoy watching!