$1.64 Puzzle 1.0 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.

Adding Three Fractions 1.0 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.

Adding Three Fractions 1.0 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.

Arcs & Sectors 1.0 Middle-School (grades 5 through 9) math program written to provide skills in context.

Angle Doubling 1.0 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.

Fraction Puzzles 1.0 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.

Fraction Squares 1.0 Fraction Squares shows a series of 160 pre-set drawings. Each drawing is of a square with a fractional part shaded. Students determine the shaded and unshaded fractional parts.

Fraction Tiles 1.0 Middle-School (grades 5 through 9) math program written to provide skills in context. Students are shown eight fraction representations and must choose three that add up to a given sum. Fractions are halves, fourths, and eighths.

Evaluating Crossnumber Puzzles 1.0 Middle-School (grades 5 through 9) math program. Students solve crossnumber puzzles by evaluating simple expressions. Program uses only positive integers.