Join Mrs. Gray for a Mystery Math Mistake with D.C. He needs your help with his number bonds. We will be counting pictures with ten and some more to answer the question "how many?" Episode ...

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When you purchase an independently reviewed book through our site, we earn an affiliate commission. By Eugenia Cheng COUNTING How We Use Numbers to Decide What Matters By Deborah Stone The title of ...

A version of this puzzle originally appeared in the October 1960 issue of Scientific American. What’s the Most Distant Galaxy? And Why Does It Matter? A pill version of the popular GLP-1 weight-loss ...

Keeping the attention of a room of 4th graders is difficult. And keeping them interested while you’re teaching them math is nearly impossible. But there was Mike Byster, mesmerizing–really, they were ...