Pokémon Go Cheat
by Dan Meyer
August 11, 2016
How long will that fan have to spin until the 5 km egg hatches?
What is a guess you know is too high?
What is a guess you know is too low?
What is a guess you think is just right?
- VideoContrasting Cases
- Teacher noteShow students the contrasting cases as they're considering helpful information.
What information would be helpful to know here?
- VideoSlow-Motion Fan
- Teacher noteThe length of the fan blade is approximately 45 centimeters.
- Teacher noteInvite your students to time the fan in order to calculate its rotational velocity (revolutions per second). Then help them understand how to use that information to calculate how long it'll take the phone to travel 5 kilometers.
- FileSample Student Work
- VideoThe Answer
PokÃ©mon Go calls you a cheater if the phone is moving faster than 1 m/s. Knowing that, where should you put the phone on the fan?