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RekenTest by 4x4 Software

Practice arithmetic skills, for kids about 8-12 and professionals, like commercial pilots or nurses. Highly customizable, it can create lessons on the fly based on the student's performance, offer predefined lessons, provide extra exercises if needed - and much more. Available in English, Spanish, Portuguese and Dutch.

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DISGCL PostScript Manual by MPI fuer Sonnensystemforschung

The program DISGCL is an interpreter based on the data plotting library DISLIN. DISLIN statements can be written to a script file and then be executed with DISGCL, or can be entered in an interactive mode. Similar to programming languages such as Fortran and C, high-level language elements can be used. These are variables, operators, expressions, array operations, loops, if and switch statements, user-defined functions and I/O routines.

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Percent-O-Rama by Polymath Love

Middle-School (grades 5 through 9) math program written to provide skills in context. Students use mental math and proportional thinking to find common percentages (10% 5% 1% 15%, etc.) of a given number.

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Batik by Canadian Mind Products

Java classes to let you create a custom utility to find and delete all junk files on your machine. Use one of the three scripts supplied as an example, to create your own XXX.java source code file then compile and use to rapidly clean your drive of junk. This program requires some elementary Java programming skill.

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Angle Doubling by Polymath Love

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: "Make triangle ABC so that m

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Fraction Puzzles by Polymath Love

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.

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Graphing Functions by Polymath Love

Middle-School (grades 5 through 9) math program written to provide skills in context. Students find and plot solutions to parabolas, hyperbolas, and absolute value functions using an on-screen Cartesian plane and five moveable points.

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DISLIN PDF Manual by MPI fuer Aeronomie

DISLIN is a high-level and easy to use plotting library for displaying data as curves, bar graphs, pie charts, 3D-colour plots, surfaces, contours and maps. Several output formats are supported such as X11, VGA, PostScript, PDF, CGM, HTML, PNG and TIFF. DISLIN is available for the programming languages Fortran 77, Fortran 90 and C. Plotting extensions for the languages Perl, Python and Java are also supported for the most operating systems.

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Hillyheights Vocabulary Teacher by Hillyheights

If you are learning any foreign language, from an elementary level up to a more advanced level, you may well have vocabulary lists to learn. This Freeware (for non-commercial use only) program may well help.

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Adding Three Fractions by Polymath Love

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.

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