Ways of thinking and ways of doing

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When students first learn about fractions, we want them to learn that they are just numbers; new numbers, but numbers nonetheless, that fit into the same system as the whole numbers they are famili…

Students will compare data for two states using comparison symbols and both rounded and unrounded (exact) numbers.

Somewhere back in days of Facebook fury about the Common Core there was a post from an outraged parent whose child had been marked wrong for something like this: $$ 6 \times 3 = 6 + 6 + 6 = 18. $$ …

Misconceptions about Multiple Methods