A recent report from the National Research Council proposes a new framework for K-12 science education that emphasizes deeper understanding of key topics. The report suggests that science education be built in three dimensions: core ideas, cross-cutting concepts relevant across multiple disciplines, and key practices. Instead of trying to cover a huge range of topics, science teachers should focus on deepening knowledge of a limited number of core ideas in four disciplines, the report says: (1) life sciences; (2) physical sciences; (3) earth and space sciences; and (4) engineering, technology,...
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