发表于2024-11-29
Light and Sound 2024 pdf epub mobi 电子书
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Harnessing children's natural curiosity about the world, this engaging series introduces kids to key science concepts through a simple question-and-answer format. The mechanics of sunlight, darkness, vibrations, and sound are simplified for young readers in this illuminating reference.
Light and Sound 2024 pdf epub mobi 电子书