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This virtual manipulative features an interactive grid where the student can mouse over points on the grid to display their coordinates and form shapes using virtual rubber bands. The online geoboard has a measure function that displays area and perimeter for shapes and, for single bands connected to two virtual pegs, distance and slope. Shapes may be colored as a way to sort or enhance them. The site features activities to explore slopes, construct reflections, and find an inscribed parallelogram. Also found on the site are instructions for using the manipulative, a brief lesson plan for using coordinates to locate shapes on a grid, and a link to the NCTM standard for geometry. Copyright 2005 Eisenhower National Clearinghouse
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