Teaching overview

Learning points

  • Mobile phones send and receive calls as radio waves.
  • Radio waves are picked up by the nearest phone mast, and relayed to the other person’s mobile.
  • A mobile phone loses signal if there are no masts nearby.
  • Signal can be blocked by thick walls and other barriers.

Curriculum keywords

  • STEM
  • Waves
  • Communication

Spark a discussion

  • How do mobile phones send and receive calls?
  • Why is it harder to get a phone signal in the countryside?
  • What can block a phone signal?

Explore our resources

Complete your lesson with teaching resources on sound from Tigtag.

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Discover free online CPD for primary science from Reach Out CPD.

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