Move over string and push pins. There's a new way to make circles and it's super easy and super cheap. Karyn Hodgens, Elementary mathematics Specialist, shows you how to get your students designing the perfect circle using a very simple object.
See how students used this in a fun, multi-day hands-on project called 'Target Practice': http://www.youtube.com/watch?v=SYJsrUby6Zg
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