No further republication or redistribution is permitted without the written permission of the editor. For the mathematics textbooks evaluation, the project identified six mathematics learning goals that were examples of the core content likely to appear in any middle grades material. They were chosen from AAAS's Benchmarks for Science Literacy. The following learning goals were used for content analysis in the middle grades mathematics textbook evaluations.
Shapes can match exactly or have the same shape in different sizes.
For the science textbooks evaluation, Project 2061 chose topics within physical, life, and earth sciences because they were most consistently included in state frameworks. Three specific topics were selected to correspond to the high priority placed on these topics in the two major sets of nationally recommended learning goals, the National Resource Council's National Science Education Standards and AAAS's Benchmarks for Science Literacy, as well as with state frameworks and educator surveys. The content analysis learning goals used to analyze these topics were crafted based on statements in both Benchmarks and Standards, and represent core science concepts that any middle grades science textbook should cover. The following learning goals were used for content analysis in the middle grades science textbook evaluations. Atoms and molecules are perpetually in motion.