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Direct linkLewis, Anna – ProQuest LLC, 2008
This study examined science textbooks over time to better understand the "science content" expectations that the U.S. educational system deems appropriate for 8th and 9th grade science students. The study attempted to answer the questions: (1) What specific science content has been presented via the textbook from 1952 to 2008? (2) Within…
Descriptors: Textbooks, Grade 9, Comparative Analysis, Physics
