Structures of Equality book coming summer 2026!

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We tell students that adding makes numbers bigger and subtracting makes them smaller, but even in kindergarten, we see examples that don’t fit.

July 23, 2025

Misconceptions About Addition and Subtraction

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Math misconceptions can start as early as kindergarten! Let’s dig into thinking around operations.

October 23, 2024

4 common elementary math misconceptions around operations (and how to avoid them)