You can find the difference between two numbers in more than one way. You can count up from the smaller number to the larger number. Or, you can count back from the larger number to the smaller number ...
Common-core math aims to have students do less memorizing—but it’s being misinterpreted to have students do more, argues Kathy Liu Sun, an assistant professor of math education at Santa Clara ...
Cath Pearn is affiliated with both the Australian Council for Educational Research and the Melbourne Graduate School of Education, The University of Melbourne. I’m sure most people can remember trying ...
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