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Let's talk about speed. This science book will define speed. A definition will lay down the foundation for further learning; and in this case, it's to distinguish speed measurements from other scientific movements. Your child should be able to create a position-versus-time graph... Read Full Overview

Let's talk about speed. This science book will define speed. A definition will lay down the foundation for further learning; and in this case, it's to distinguish speed measurements from other scientific movements. Your child should be able to create a position-versus-time graph... Read Full Overview