## Reflection: Connection to Prior Knowledge Backwards, Upside Down or Inside Out? - Section 1: Set the Stage

I have taught logarithms and exponential functions in many ways and sequences, so my decision for this lesson was to build on the idea of inverse functions that we've been studying and hook my students with a real-world problem.  I found that my students accepted logarithms as the inverse for exponential functions more readily than other years, but I'm not certain why.  It may be that the story was engaging enough that they were willing to focus on whatever math got them a solid answer or it may be that the extra work in setting up general inverse functions gave them confidence that exponential functions wouldn't work the same way.  Whatever the reason, I plan to use this same approach next year and will update this reflection with my observations of how that group of students does with logarithms.

Exponential Inverse = Logarithm
Connection to Prior Knowledge: Exponential Inverse = Logarithm

# Backwards, Upside Down or Inside Out?

Unit 7: Building Functions
Lesson 9 of 12

## Big Idea: Take your students to Nome, Alaska as they learn to use logarithms to find out if the Great Mercy Race was successful.

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Standards:
Subject(s):
Math, Function Operations and Inverses, logarithms, exponential function, Algebra II, master teacher project, 11th Grade
50 minutes

### Merrie Rampy

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