These links lead to information and resources that will extend students' understanding of the concepts we are learning about as well as an appreciation for their own geometric world!
A nicely illustrated article on pentominoes.
An illustrated discussion of pentominoes and a collection of related links.
Kadon Enterprises, Inc. provides some wonderful gamepuzzles for you to try.
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The National Library of Virtual Manipulatives from Utah State University presents these online manipulatives to enhance student learning. They are indexed by math topic and grade level.
Numerous examples that explore symmetry in many forms.