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Percent-O-Rama
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.
Tess (Mac)
While you draw, Tess will maintain the symmetry group you have chosen; 11 rosette (circular), all 7 frieze (strip), and all 17 wallpaper groups are included. Illustrations may be printed from Tess or exported to JIF, PCX, DXF,SVG, and other formats.
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