Interactive 3-Dimensional Shapes (Solids)
With this interactive 3-D shape explorer, you can visualize and rotate the following solids: cube, cuboid (a.k.a rectangular prism), tetrahedron, square pyramid, octahedron, triangular prism, and cylinder. Drag the shape with the mouse to rotate it. The activity also shows you the net of each solid (click the button "unfold" to see the net).
The + and − buttons scale the solid to be bigger or smaller. You can even make the solid to nearly fill the screen - which is useful if showing the shapes to a class of students.
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See also
More interactive tutorials and activities about solids, volume, and surface area