Kaitlin Lewis
@kaitlinmlewis
Educator | Full-Stack Software Developer | Embracing Hamilton | #a11y advocate
ID: 3667088237
15-09-2015 19:39:08
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105 Followers
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Students around the world have answered over 100 million multiplication questions as they use spaced repetition to develop fact fluency. Learn more about Multiplication by Heart, made in partnership with Dan Finkel, at mathigon.org/multiply