To create your own Happy Mathematics Day sign, see yesterday’s post.

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.

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# Happy Math Day!

To create your own Happy Mathematics Day sign, see yesterday’s post.

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.