Tides, Sound Waves, and Stock Markets

Help pupils see the world through the eyes of a mathematician. As they examine tide patterns, sound waves, and stock market patterns using trigonometric functions, learners create scatter plots and write best-fit functions. 

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CCSS: Designed
Instructional Ideas

  • Have learners find and analyze data online for local periodic data such as daylight hours or tide patterns
  • Create collaborative groups to analyze the data in the first example; graph the different functions they create to discuss accuracy
Classroom Considerations

  • Pupils need graph paper for the lesson
  • The 13th in a 19-part series of lessons
Pros

  • Uses data that is not perfect to emphasize the idea of predictions and estimation
  • Provides a set of practice problems for independent practice and includes a worked-out solution guide
Cons

  • None
Common Core