## Reflection: Standards Alignment Graphing Exponential Decay Functions - Section 4: Closure

One of the big pushes in the common core is for students to understand numbers in the context of a problem situation.  That is what I was trying to accomplish with this closure while simultaneously assessing students understanding of the day's lesson.  As you can see from the student work, students did a nice job identifying what the "coordinates" mean in the context of this particular problem.

I actually noticed that students really gravitated to this idea of using a table to understand these problems.  Once they understood what the independent and dependent variable stood for, they realized how valuable the table could be in showing them how the variables changed over time.

Standards Alignment: Mathematizing a Situation

# Graphing Exponential Decay Functions

Unit 7: Exponential Functions
Lesson 6 of 13

## Big Idea: This lesson helps to build understanding about percent decrease over time and how it can be modeled using an exponential function.

Print Lesson
2 teachers like this lesson
Standards:
Subject(s):
Math, Algebra, exponential function, exponential growth, linear functions, Function Operations and Inverses, function, exponential decay, percent decrease, geometric patterns
40 minutes

### James Bialasik

##### Similar Lessons

###### What is Algebra?
Algebra II » Modeling with Algebra
Big Idea: Algebra is built on axioms and definitions and relies on proofs just as much as geometry.
Favorites(35)
Resources(19)
Fort Collins, CO
Environment: Suburban

###### Inequalities: The Next Generation
12th Grade Math » Polynomial and Rational Functions
Big Idea: Does the zero product property work for inequalities?
Favorites(2)
Resources(19)
Troy, MI
Environment: Suburban

###### Graphing Systems of Linear Inequalities (Day 1 of 2)
Algebra I » Linear Inequalities
Big Idea: Students will combine their knowledge of systems of equations and linear inequalities to represent the solution in a simultaneous equation scenario.
Favorites(8)
Resources(16)
Washington, DC
Environment: Urban