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Henri Picciotto's Math Education Page
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Activities from Geometry Labs
Area: Labs 8.4-8.6
Distance, Pythagoras, Radicals: Labs 9.1-9.4, 9.6
Similarity, Slope: Labs 10.1, 10.2
Blog posts
Geoboard Triangles
Inscribing Geoboard Squares in Polyominoes
No Three on a Line
Heilbronn's Triangle
Ariadne's String
Geoboard Problems for Teachers
Geoboards and Dot Paper
Download the GeoGebra file.
Other virtual manipulatives:
Base Ten Blocks | Circle Geoboard | Grid Paper | Lab Gear | Pentominoes | Tangrams
