Teacher Lesson Plan
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This activity is aligned to NCTM Standards - Grades 6-8: Geometry, Measurement, Problem Solving, Reasoning and Proof, and Communication and to California Mathematics Standards Grade 7: Measurement and Geometry #3.4 and Mathematical Reasoning #1.1, 1.2, 2.2, 2.4, 2.5, 2.6, 3.2.
Glencoe's Interactive Mathematics text provides an activity (Units 7-12, p. 9-14) with five stations. Also on page 238 in the Data Bank there is A Story of the Tangram which can be read in class or assigned as homework.
Each group of 4 students is given 4 sets of tangrams. Provide some time for them to manipulate the shapes. Use the shapes to introduce or review the following vocabulary. The links from each of the vocabulary words are to informational pages at the Math Forum.
Students work in groups at the five different menu stations. As they work they each record the answers to the specific questions after discussing them. They write the summary statement required at the conclusion of each station.
Tangram a java applet by Jos van Uden.
Chinese Tangram Puzzles by Dana Tunison
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