Simple drawing is useful in focusing attention on properties, while constructing allows the creation of robust and precise shapes, which can then be used in future geometric explorations.ĭraw a circle, then use the segment tool to construct two radii and the segment that joins the radius points. This simple introduction to Sketchpad helps build a rich conception of the triangle-so that students might not expect them all to have horizontal bases! Dragging allows students to see the continuous variations that are possible in geometric shapes, and to build visual and spatial imagery that will help them become better problem solvers.Īs students attempt to configure their triangles into, say, isosceles ones, you can develop the distinction between drawing and constructing. Use the Straightedge tool to draw a triangle, and then drag one of the vertices of that triangle using the Arrow tool to create an infinite variety of triangles. Starting with the toolbox, you’ll find the Point, Straightedge (line), and Compass (circle) tools-the building blocks of Euclidean geometry, and the starting points for rich explorations in school geometry and beyond. Separate installation codes for school boards, teachers/students.Geometry is “home base” in Sketchpad. Sketchpad 5 is a downloadable application that can be installed over a network.New JavaSketchpad applets can incorporate algebraic functionality and action buttons.The new Information tool gives quick access to definitions and properties of objects.Sketchpad Version 5 supports Unicode and video game-quality graphics through a tenfold increase in data compression, high-performance graphics acceleration, and advanced data handling.All your Version 4 sketches and activities will still work - they’ll just work faster.The layout of mathematical expressions is improved - you can use Greek symbols, multiple or nested subscripts in labels, and other mathematical notation.Mathematical italicization is used in labels, measurements, calculations, and equations.Text style and size on axis tick marks are adjustable.Expanded line weights, line strokes, and point sizes allow for age-appropriate sizing of objects.
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