## Reflection: Developing a Conceptual Understanding Evaluating exponential and logarithms - Section 1: Bellwork

After reviewing a webnair from The Global Math Project on Logarithms. I am going to start my instruction with logarithms with computation.  I am also using ideas from James Stanton website Thinking Mathematics!

I will not use the term logarithm but start with a power function to see if students see the connection between logarithms and repeated division.  My goal is to have a deeper understanding of logarithms not just that a logarithm is the inverse of an exponential function.

I am attaching my notes to use with the students. They will analyze some examples and then make a rule for the new function and finally shown how function is actually a logarithm.

As I work through this idea I am sure that this unit will change dramatically.

Developing a Conceptual Understanding: New idea for introducint logarithms

# Evaluating exponential and logarithms

Unit 3: Exponential and Logarithmic functions
Lesson 3 of 11

## Big Idea: Understanding that exponential functions and logarithmic functions are inverses makes it possible to evaluate and simplify expressions.

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Standards:
Subject(s):
Math, logarithms, exponential, Evaluating Expressions, PreCalculus, exponential function, logarithmic functions, equation solving, Properties of Logarithm
45 minutes

### Katharine Sparks

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