## Reflection: Intervention and Extension Exponential Models Day 2 of 2 - Section 4: Homework

The extension problem, #11, previews exponential decay.  I have found that students struggle with exponential decay more than they do with exponential growth.  This sample Student Assignment shows one common mistake.  The first 20% off takes the zombies from 100 to 80.  This student then takes continues to take 20 zombies off each night thus creating a linear pattern rather than an exponential one.  The next day, when we went over the assignment, I presented this on the board along with the correct answer and asked the students to talk with their partner to determine the correct solution.  We then discuss it as a class.  This strategy is a great way to determine the correct solution to a problem while encouraging students to discuss mathematics.

Intervention and Extension: Previewing Exponential Decay

# Exponential Models Day 2 of 2

Unit 8: Exponential and Logarithmic Functions
Lesson 4 of 15

## Big Idea: Aarrghhh...Brains...Zombies...and Exponential Functions! Discover Exponential Functions in this Zombie themed Lesson.

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Standards:
Subject(s):
Math, Algebra, exponential growth, Algebra 2, master teacher project, exponential models
50 minutes

### Amelia Jamison

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