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* *Reflection: Student Led Inquiry
Quiz and Comparing Linear, Exponential Models - Section 2: Linear or Exponential Growth?

*Indentifying High Quality Inquiry Tasks.mp4*

*Quiz and Comparing Linear, Exponential Models*

# Quiz and Comparing Linear, Exponential Models

Lesson 6 of 11

## Objective: SWBAT compare linear and exponential growth models.

Students will complete Quiz Switching Representations Exponential Functions in the first half of class. This quiz assesses my students' ability to switch among the 4 representations of exponential functions: numerical, graphical, algebraic and verbal.

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In this lesson, I switch the focus from flexible algebraic and graphing work to real life applications of exponential functions. I present each student with a copy of Linear Vs Exponential Growth Task from Illustrative Mathematics as an introduction to modeling with exponential functions. My students have some background with this topic from Algebra 1, so I anticipate that they will be able to complete this task independently.

When they have completed the task, we discuss linear and exponential models and how they differ. We take some notes on essential features of these two function types. Some of the most important

- linear functions have a constant rate of change, while exponential functions have an increasing (or decreasing) rate of change
- exponential growth always outpaces linear growth in the long run
- linear growth is associated with increase by a constant quantity and exponential growth is associated with increase by a constant percent

#### Resources

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- LESSON 1: Properties of Exponents
- LESSON 2: Exponential Equations
- LESSON 3: Logarithms
- LESSON 4: Quiz and Graphing Exponential Functions
- LESSON 5: Multiple Representations of Exponential Functions
- LESSON 6: Quiz and Comparing Linear, Exponential Models
- LESSON 7: Drinking and Driving Activity
- LESSON 8: Exponential Models in the Sciences
- LESSON 9: Exponential Functions in Finance
- LESSON 10: Review Workshop: Exponential Functions and Logarithms
- LESSON 11: Unit Test: Logarithms and Exponential Functions