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Rainbow Squares are another neat Math Model designed for elementary, secondary, or adult learners as an individual or group learning puzzle. Six squares are each made up of three different rainbow colored pieces that can be put together in a variety of ways. Each of these pieces can also be used to form other squares using two, four, five, or six pieces that are easily constructed by younger learners and recorded as colored shapes. Older learners can describe the area of each piece as a fraction or percentage of one square. They can also make configurations of several pieces and copy the outline for other learners to replicate like super Tangrams. 

Rainbow Squares come with a guide to the activities described above and are packaged in a handmade wooden box, so just putting this Math Model away requires some skill!