Real acrostic puzzles on your Windows computer. All the challenge and enjoyment of solving acrostics exactly like the ones found in newspapers or magazines. Print them out for traditional pencil-and-paper solving.

Real cryptograms on your Windows computer. All the challenge and enjoyment of solving cryptograms exactly like the ones found in newspapers or magazines. Make your own cryptograms instantly. Just type in a favorite quotation and click a button.

Real crossword puzzles on your Windows computer. All the challenge and enjoyment of solving crosswords exactly like the ones found in newspapers or magazines. Print them out for traditional pencil-and-paper solving.

Real acrostic puzzles on your Windows computer. All the challenge and enjoyment of solving acrostics exactly like the ones found in newspapers or magazines. Print them out for traditional pencil-and-paper solving.

Real cryptograms on your Windows computer. All the challenge and enjoyment of solving cryptograms exactly like the ones found in newspapers or magazines. Make your own cryptograms instantly. Just type in a favorite quotation and click a button.

Real crossword puzzles on your Windows computer. All the challenge and enjoyment of solving crosswords exactly like the ones found in newspapers or magazines. Print them out for traditional pencil-and-paper solving.

This free collection of tests in arithmetic, pre-algebra, algebra, trigonometry, hyperbolic trig and calculus offers step-by-step solutions together with extensive reference material and interactive training technique.

Test authoring mathematics freeware with 500+ solutions in arithmetic, pre-algebra, algebra, trigonometry and hyperbolic trigonometry. Easy preparation of math tests and their variants

Free problem-solving mathematics software with fully explained step-by-step solutions in arithmetic, pre-algebra, algebra, trigonometry and hyperbolic trigonometry

36319 arithmetic and pre-algebra problems from basic to advanced with fully explained solutions, related math theory and easy-to-use test preparation options

41087 hyperbolic problems from basic to advanced with fully explained solutions, related math theory and easy-to-use test preparation options

84102 trigonometric problems from basic to advanced with fully explained solutions, related math theory and easy-to-use test preparation options

5018 algebraic equations from basic to advanced with fully explained solutions, related math theory and easy-to-use test preparation options

19292 trigonometric equations from basic to advanced with fully explained solutions, related math theory and easy-to-use test preparation options

Test preparation mathematics software offers 35126 algebraic problems from basic to advanced with solutions and enables preparation of printable algebra tests and their variants

54806 algebraic inequalities from basic to advanced, with solutions and test authoring options. Enables creation of math tests, homeworks, quizzes and exams of varied complexity in a minute. Generates 30 variant tests around a constructed example

48632 solved trigonometric equations from basic to advanced, with test authoring options. Enables creation of math tests, homeworks, quizzes and exams of varied complexity in a minute. Generates 20 variant tests around a constructed example.

37988 algebraic equations with solutions and test authoring options. Enables creation of math tests, homeworks, quizzes and exams of varied complexity in a minute. Generates three variant tests around a constructed example. Includes basic and advanced alg

Test preparation mathematics software offers 53809 hyperbolic equations with answers and solutions and enables preparation of printable tests and their variants

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

Scientific calculations and data analysis software. 2D and 3D graphic plots of functions and data. Calculations with vectors, matrices, tensors, complex numbers, fractions, quaternions, polynomials. Data fitting, statistics, optimization, spectrums.

Unique collection of Delphi tips and articles where Delphi programmers can find ideas, solutions and share their experience.

You are Rich Diamond, making your way through elaborate mazes of monsters and challenging puzzles to collect precious diamonds which always seem to lie just out of grasp.