Hunt for shapes and make familiar objects by putting together several different shapes. Warm up with a Mystery Math Mistake to tell whether Dotson's 10-frames represent a number more than his focus ...

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Benjamin Adric Dunn, a data scientist at the Norwegian University of Science and Technology, shows me a picture of unevenly spaced dots arranged vaguely like the rocks at Stonehenge. The overall ...

Hortensia Soto does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...