The Invisible School

Last May record temperatures provoked a GLOF or glacial lake outburst flood in northern Pakistan, sweeping away bridges and villages in the valley...

Takes us to locations all around the US and shows us the heavy toll that modern technology is having on humans and the earth. The visual tone poem...

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

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...

Morgan Spurlock tours the Middle East to discuss the war on terror with Arabic people.

Ten years after the film Home (2009), Yann Arthus-Bertrand looks back, with Legacy, on his life and fifty years of commitment. It's his most personal...

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

Documentary which follows the construction of a trailblazing 36,000-tonne steel structure to entomb the ruins of the nuclear power plant destroyed in...

The Balkans cradles Europe's last wild rivers and supports abundant wildlife and healthy, intact ecosystems. These rivers are "The Undamaged" –...

The Standard Deviants serve-up all sorts of useful trig vocabulary. Get your fill of degree and radian measurements, and a sampler platter of right...

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