pre-algebra (22 products)

$1.64 Puzzle 1.0 (Freeware)

Middle-School (grades 5 through 9) math program written to provide skills in context. Students must place four quarters, four dimes, four nickels, and four pennies on a 4 by 4 grid so that the rows and columns sum to given values. The program generates hundreds of problems on two levels of difficulty.

Adding Three Fractions 1.0 (Freeware)

Middle-School (grades 5 through 9) math program written to provide skills in context. Students choose one of two types of problems: ruler fractions (halves, fourths, eighths, sixteenths) or regular fractions. Students must add the given three fractions. Every problem is illustrated with an interactive sketch.

Angle Doubling 1.0 (Freeware)

Middle-School (grades 5 through 9) math program written to provide skills in context. Students write and solve simple algebra problems, then manipulate the vertices of an on-screen triangle so that it matches given information about its angles. Sample problem:

Arcs 1.0 (Freeware)

Middle-School (grades 5 through 9) math program written to provide skills in context. Given the radius or diameter of a circle, and the measure of a central angle, students must find the following: the area of the circle; the area of the sector defined by the central angle; the circumference of the circle; the length of the arc defined by the central angle. All answers are rounded to the nearest hundredth.

Box 1.0 (Freeware)

Middle-School (grades 5 through 9) math program written to provide skills in context. Students use sets of data to construct on-screen box and whisker plots.

Chase 1.0 (Freeware)

Middle-School (grades 5 through 9) math program written to provide skills in context. Students are shown a Cartesian plane across which a small dot moves. Students try to

EMBook Light (Freeware)

Free collection of tests in arithmetic, pre-algebra, algebra, trigonometry, hyperbolic trig and calculus together with step-by-step solutions. Each solution step is completely substantiated, including citing necessary definitions and formulations and proving used formulas and theorems. In each test, problems vary in topics and difficulty. You can try to solve a number of tasks on your own, with the help of interactive training technique.

EMSolution Light (Freeware)

This free bilingual educational program for students and math teachers offers step-by-step solutions to 1224 math problems in arithmetic, pre-algebra, algebra, trigonometry, hyperbolic trig and calculus. Each solution step is completely substantiated, including proofs of underlying formulas and theorems. Special options help teachers in developing quizes, tests, lesson plans and worksheets.

EMTask Light (Freeware)

This free bilingual educational program for math teachers and tutors offers solutions to 1224 math problems in arithmetic, pre-algebra, algebra, trigonometry, hyperbolic trig and calculus. Problems vary in difficulty. Offered are proofs of identities and solutions of algebraic fractional equations and inequalities, trig equations and equations of high degree. Special options help teachers in developing quizes, tests, lesson plans and worksheets. Program can generate numerous similar problems on the basis of a constructed example.

Evaluating Crossnumber Puzzles 1.0 (Freeware)

Middle-School (grades 5 through 9) math program. Students solve crossnumber puzzles by evaluating simple expressions. Program uses only positive integers.

Fraction Puzzles 1.0 (Freeware)

Middle-School (grades 5 through 9) math program written to provide skills in context. The program shows a series of 150 preset problems. Each problem has a blank, sectioned square and a given fraction goal. Students must shade the square to match the given fraction. The program allows students to draw lines on the screen, and to shade certain fractional parts.