Reflection: Staircase of Complexity Exponential Decay Functions - Section 2: Introducing Exponential Decay Functions


I love presenting a task to my students that surprises or stumps them.  With the right presentation, this kind of problem can really motivate and engage students.  Often I will warn the students that I am going to attempt ‘trick’ a certain percentage of them.  This gives them the hint to be watchful and motivates them not to get ‘tricked’.  The second problem in this lesson does just this.  They were confident with the first problem and jumped right into writing the scenario with the ¼ in the function.  With a quick number check, it became obvious that this didn’t work.  The shock of being so confident and then not being right did its jobs and they did well on the third model (Student Notes).

  Staircase of Complexity: It's Great To Be Sneaky
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Exponential Decay Functions

Unit 8: Exponential and Logarithmic Functions
Lesson 6 of 15

Objective: Students will be able to write functions for and graph exponential decay models.

Big Idea: Let's get rid of some zombies! And do some graphing as well.

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2 teachers like this lesson
Math, exponential function, Algebra, Algebra 2, exponential decay, exponential modeling, master teacher project
  51 minutes
image exponential decay
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