Geometric Sequences and Exponential Growth and Decay

Connect geometric sequences to exponential functions. The 26th installment of a 35-part module has scholars model situations using geometric sequences. Writing recursive and explicit formulas allow scholars to solve problems in context.

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CCSS: Designed
Instructional Ideas

  • Have the class create a graphic organizer summarizing how to find recursive and explicit formulas for sequences
Classroom Considerations

  • Learners should have prior experience with both arithmetic and geometric sequences
  • Note that a major difference in the treatment of geometric sequences in Algebra II (compared to Algebra I) is that the indices start at zero
Pros

  • Lesson reviews concepts before diving into more complex problems
  • Teacher guide contains a comprehensive answer key for all problems
Cons

  • None
Common Core