Inventions

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Across
  1. 3. You use this when you want to make food hot quickly.
  2. 6. You need this when it rains so you don't get wet.
  3. 7. You use it to watch your favorite movies and programmes.
Down
  1. 1. You use this device to perform mathematical calculations
  2. 2. You use this to find the temperature of something.
  3. 4. you use it to take photographs.
  4. 5. You can call people on the other side of the world.