Using the new Next Generation Science Standards (NGSS), the My World of Science series provides the earliest readers with background on key STEM concepts. Simple Machines explores the concepts and uses of simple machines in an engaging way that will help readers develop word recognition and reading skills. Includes a glossary and index. Simple sentence structure and word usage help readers develop word recognition and reading skills. Includes a glossary and index. Using the new Next Generation Science Standards (NGSS), the My World of Science series provides the earliest readers with background on key STEM concepts, from the solar system to plant cycles. Simple sentence structure and word usage help readers develop word recognition and reading skills. Includes a glossary and index

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