Consider this sequence of numbers: 5, 7, 9. Can you spot the pattern? Here’s another with the same pattern: 15, 19, 23. One more: 232, 235, 238. “Three equally spaced things,” says Raghu Meka, a ...
In early September, math teachers from across Kent County, Md., gathered for their first professional learning community meetings of the school year. Kris Hemstetter, a math and English/language arts ...
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