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The NSTA reader's guide to a framework for K-12 science education : practices, crosscutting concepts, and core ideas /
出版 2012主題: “...Science Study and teaching Aids and devices United States....”
An electronic book accessible through the World Wide Web; click to view
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Selecting instructional materials a guide for K-12 science /
出版 1999主題: “...Science Study and teaching Aids and devices Purchasing United States....”
An electronic book accessible through the World Wide Web; click to view
電子 電子書