Reflection: Checks for Understanding Exponential Functions - Section 1: Warm Up and Homework Review


In this lesson, we extended our exponential model into graphs.  I wanted to make sure that my students had a solid understanding of an exponential function in relationship to a scenario as this will aid in their conceptual development of its graph.   I could tell that most students had a decent understanding about what each portion meant.  As you can see in 1 and 3, they can identify what each portions means.  My only concern in looking at this was the 2 in f(x)=(10)2x.  The first student represented this as the original plus its double.  The other student said multiply by 2.  Technically this is correct but I find that students often see this two as 2 new fish rather than 1 old plus 1 new.  This is something I addressed in today’s lesson and will go over as we go into decay functions next.  This student, 2, made me laugh as they associated the scenario to zombies rather than fish.  They obviously didn’t read the problems carefully although their work is mainly correct.  

  Checks for Understanding: Do They Know The Model?
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Exponential Functions

Unit 8: Exponential and Logarithmic Functions
Lesson 5 of 15

Objective: Students will be able to identify the features of an exponential graph and use transformations to graph them.

Big Idea: We will extend the zombie apocalypse scenario to the graphs of exponential functions.

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3 teachers like this lesson
Math, exponential function, Algebra, Algebra 2, Transformations of Functions, master teacher project
  66 minutes
image exponential
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