LBK

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Across
  1. 2. How many simple machines are there?
  2. 5. This simple machine raise and lower things.
  3. 6. These things help us work and play.
  4. 8. I can play on this inclined plane.
  5. 9. Not boring.
  6. 11. A door stop is this kind of simple machine.
Down
  1. 1. A ramp is this kind of simple machine.
  2. 3. Easy.
  3. 4. Cars use this simple machine to move.
  4. 7. A bottle cap.
  5. 10. A see-saw is this kind of simple machine.