Geometry Online
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http://math.rice.edu/~lanius/Geom/  


Cynthia Lanius  
Geometry activities from a geometry class at Milby High School in Houston, Texas. Topics include: History of Geometry (contributions of Egyptians, Babylonians, and Greeks, with links to biographies of major contributors to geometry); Hidden Polygons (locate them on triangular grid paper); Isosceles Triangle Puzzler (use the Isosceles Triangle Theorem to analyze a problem with similar triangles  answers can be submitted online); Circles and Pythagoras; an SATType Quiz (graded online); The Golden Ratio (do a measuring activity and build a rectangle that approaches the golden ratio; Experiment with Volume (demonstration of volume of cylinders; SchoolBus Geometry (a nonEuclidean geometry introduced using a school bus rather than a taxicab; and Glossary of geometric terms. Includes Geometer's Sketchpad sketches to download.  


Levels:  Middle School (68), High School (912) 
Languages:  English 
Resource Types:  Lesson Plans and Activities, Collections, InternetBased Projects, Dictionaries, Glossaries, Thesauri, Geometer's Sketchpad 
Math Topics:  Golden Ratio/Fibonacci, Discrete Math, HigherDimensional Geometry, Triangles and Other Polygons, NonEuclidean Geometry 
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