Reflection: Connection to Prior Knowledge Backwards, Upside Down or Inside Out? - Section 1: Set the Stage


I have taught logarithms and exponential functions in many ways and sequences, so my decision for this lesson was to build on the idea of inverse functions that we've been studying and hook my students with a real-world problem.  I found that my students accepted logarithms as the inverse for exponential functions more readily than other years, but I'm not certain why.  It may be that the story was engaging enough that they were willing to focus on whatever math got them a solid answer or it may be that the extra work in setting up general inverse functions gave them confidence that exponential functions wouldn't work the same way.  Whatever the reason, I plan to use this same approach next year and will update this reflection with my observations of how that group of students does with logarithms.

  Exponential Inverse = Logarithm
  Connection to Prior Knowledge: Exponential Inverse = Logarithm
Loading resource...

Backwards, Upside Down or Inside Out?

Unit 7: Building Functions
Lesson 9 of 12

Objective: SWBAT express exponential equations as logarithms. SWBAT use technology to solve exponential equations expressed as logarithms.

Big Idea: Take your students to Nome, Alaska as they learn to use logarithms to find out if the Great Mercy Race was successful.

  Print Lesson
Add this lesson to your favorites
Math, Function Operations and Inverses, logarithms, exponential function, Algebra II, master teacher project, 11th Grade
  50 minutes
upside down
Similar Lessons
Logarithms - Napier's Wonderful Invention!
Algebra II » Exponents & Logarithms
Big Idea: What turns multiplication into addition and division into subtraction? Logarithms, that what!
Fort Collins, CO
Environment: Suburban
Jacob Nazeck
Radioactive Decay and Nuclear Waste
12th Grade Math » Exponential and Logarithmic Functions
Big Idea: How long it will take for radioactive waste to reach a safe level?
Troy, MI
Environment: Suburban
Tim  Marley
Experts on Exponential Equations
12th Grade Math » Logarithmic Functions and Equations
Big Idea: Student teams become experts on one approach to solve an exponential or logarithmic equation and present the method to the class.
Phoenix, AZ
Environment: Urban
Tiffany Dawdy
Something went wrong. See details for more info
Nothing to upload