The introduction to this intriguing exercise and article begins "If a ball bounces an infinite number of times, it must take an infinite amount of time to finish bouncing!" This piece appeared in The Journal of Online...
An extensive annotated list of links to material on many-dimensional geometry.
Interactivate, Shodor's "set of free, online courseware for exploration in science and mathematics" presents this activity to teach students the geometry concept of tessellation. The java-based activity allows students...
The basics of compass and straightedge construction, with notes about The Instruments and What is a construction? Construct the perpendicular bisector or the midpoint of a line segment; given a point on a line,...
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