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If you haven’t subscribed to Vi Hart’s blog yet, what are you waiting for?
Want to help your kids learn math? Claim your free 24-page problem-solving booklet, and sign up to hear about new books, revisions, and sales or other promotions.
Another great, fun math vid to share with my girls. Thanks, Vi, for putting the time into this project, and sharing it with would-be mathematicians around the world.