States still have far to go in setting rigorous, high quality expectations for K-12 math instruction. Although a majority have replaced or revised their math standards since 2000, many have failed to make substantial improvements. The review was led by David Klein, Professor of Mathematics at California State University-Northridge, and evaluates the content, writing quality, and clarity of K-12 math standards in each state. Klein and his team attribute many of  the shortcomings to overuse and wrong applications of manipulatives and calculators; wrong-headed guidance from the National Council of Teachers of Mathematics; and lack of true mathematics competence among those writing the standards.

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