Math is, by definition, a subject about numbers. But at the National Council of Teachers of Mathematics this week, math educators said the subject has its own language, too—and knowing how to speak it ...
Students in Years 1 and 2, the equivalent of kindergarten and first grade in the U.S., prepare for a math lesson at St. Clair School in Dunedin, New Zealand. Credit: Becki Moss for The Hechinger ...
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