Rainbow Resource is running a 20% off sale on Math Mammoth printed books & CDs! The sale lasts till August 22. Check it out here!
And... did you know? Nowadays, they offer both full-color versions and black-and white versions of my books. :)
Math Mammoth printed books sale!
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Rainbow Resource is running a 20% off sale on Math Mammoth printed books & CDs! The sale lasts till August 22. Check it out here!
And... did you know? Nowadays, they offer both full-color versions and black-and white versions of my books. :)
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