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|Cut the Knot!, Alexander Bogomolny|
|Droodles were invented by Roger Price in 1950s. These were rather abstract drawings of few lines accompanied by an implicit question — "What is it?" A punch line — the author's answer — made the drawings obvious. A mathematical droodle is a visual object accompanied by a "What is it?" question to which there is at least one plausible answer with mathematical contents. In Drawing Worlds, R. N. Jackiw - creator of The Geometer's Sketchpad - argues for the pedagogical value of special-purpose investigation environments. With applets that function as droodles.|
|Levels:||High School (9-12), College|
|Resource Types:||Problems/Puzzles, Articles, Web Interactive/Java|
|Math Topics:||Conic Sections and Circles, Triangles and Other Polygons|
|Math Ed Topics:||The Web and Pedagogy, Curriculum/Materials Development|
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