Crazy Clocks

This Crazy Clocks assessment also includes:

While a stopped clock is right twice a day, a fast or slow clock confuses people for weeks. Scholars observe a clock running slow and must correct it before observing a clock running fast and working it backward. Finally, a multi-step problem relating a clock displaying an unbelievable time requires applying a new problem-solving strategy.

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Instructional Ideas
  • Provide hands-on clocks for those who struggle with the concept
  • Set up a time for pupils to teach how they solved these problems to younger students learning to tell time
Classroom Considerations
  • Relies on prior knowledge of telling time on analog clocks
  • Includes an answer key
  • Works well in traditional or flipped classes
  • None
Common Core