Dino Trilogy 

Three educational games for ages 5-12: Dino Match (Memory), Dino Numbers (Math), and Dino Spell (Spelling). Games include animation, music and sound effects. Loveable Derik the Dinosaur continually thwarts the shenanigans of Rex the Tyrannosaurus.
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Kalkulator 

Advanced Sci/Eng calculator. Expression evaluation, 18 digits precision, variables, 100 functions, graphs, unit conversion, interpolation, polynomial regression, linear algebra, systems of linear, nonlinear and differential equations, optimization.
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ProKon 

ProKon is a calculator unlike any you've seen before. It features unit conversions of over 400,000 units, a pop-up scientific/financial/geometry calculator with tape, as well as many calculation modules covering a wide variety of topics.
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Animated Math 

Teaches counting, addition and subtraction with animated rewards every step of the way. Not just a drill, but a tutorial that gives graphic help as needed. This program is for young children - it covers the numbers 0 through 9.
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Animated Arithmetic 

Teaches addition, subtraction, multiplication and division for children from 1st through 4th grades. It provides exercises in addition and subtraction with and without regrouping. Problems can involve up to 9 digits. Puzzle and maze game rewards.
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AstroGrav (Windows) 

A software program that allows you to study how astronomical objects move and interact under the force of gravity. It features superb interactive 3D graphics which allow you to move around within an astronomical system, while watching how it evolves.
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