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Book Description

Readers learn how this simple machine makes it easier to keep objects locked together. By the end of the book, readers know the difference between complex and simple machines and how screws are used in everyday life to make work easier.

  • ISBN: 9781503803053 |
  • Hardcover: 24 pages |
  • Publisher: The Child's World, Inc. |
  • Publication date: |
  • Language: English |
  • Format: Ebook