Four-Point Conics

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...

EVERYTHING YOU NEED TO KNOW TO ACE PRE-CALCULUS IS AT YOUR FINGERTIPS: functions, polynomials, f(x), RATIONAL FUNCTIONS, standard form for rational...

Not long ago, a boy Makarka lived in this area. One day after his grandmother left for the city, Makarka cleared up and began to break trees, shoot...

Geometry Part 2 goes into detail on perimeter, circumference and area for 2-dimensional and 3-dimensional figures. This DVD is also helpful for...

Exploring the private lives of sharks as they hunt, rest, clean and reproduce.

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...

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

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

Revised 1998 version. Beginning with a review of functions and graphing, Part 1 jumps into the world of calculus by covering limits, vertical and...

A fascinating new look at the biblical, historical, and scientific evidence for Creation and the Flood. Learn from more than a dozen scientists and...

With all those X's and Y's, pre-algebra can be very intimidating. But with the right preparation, pre-algebra is as easy as 1-2-3! Building on your...