发表于2024-12-01
Back and Forth 2024 pdf epub mobi 电子书
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Using simple text appropriate for young readers, books in this series explain the basic concepts of motion. Colorful photos show examples of movement and where we see it every day. This series explores and supports the standard "The Physical Setting: Motion," as required by Benchmarks for Science Literacy: Project 2061.
Back and Forth 2024 pdf epub mobi 电子书