Theory of Sets

Today we cut the granite with diamond-cut blade as is one of the most difficult rocks to cut due to its hardness.How could the egyptians, if it was...

What is Bitcoin? With the advent of Bitcoin, the world's first digital currency, for the first time in history money is no longer controlled by banks...

A documentary about the life and works of the artist M. C. Escher. Maurits Cornelis Escher (1898-1972) usually referred to as M. C. Escher, was a...

Revised 1998 version. When you're ready to tackle advanced calculus, The Standard Deviants are ready to help! Part 2 covers applications of the...

This edition of Trigonometry includes such topics as radians, the special angles, right triangles, the Pythagorean Theorem, sine, cosine, tangent,...

Part 2 starts off with a quick review of graphing as well as sine, cosine and tangent. From there, this video charts new territory as we dive into...

Ten years ago, Tetsuya Miyamoto had a dream to change the world through puzzles. In his classroom in Yokohama, KenKen was born. Enter a world where...

Every year, millions of high school and college students walk into their first geometry class thinking: "Circles and squares. How tough can it be?"...

Physics is a system of models of nature according to which all phenomena are explained in terms of matter and force. Sound confusing? It doesn't have...

Until recently geometry was 'cold', incapable of describing the irregular shape of a cloud, the slope of a mountain or the beauty of the human body....

Join Tad and Lily a they blast off on an exciting educational adventure! Tad and Lily need the perfect collection of things to take to school for...