Of five major content areas covered in math classes — numbers and operations, measurement, geometry, data and statistics, and algebra and functions — teachers are putting a bigger emphasis ...
Educational Studies in Mathematics, Vol. 73, No. 1 (Jan., 2010), pp. 3-19 (17 pages) This study is part of a project concerned with the analysis of how students work with two-variable functions. This ...
Some scientific discoveries matter because they reveal something new — the double helical structure of DNA, for example, or the existence of black holes. However, some revelations are profound because ...
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