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Jenna McWilliams
Jenna McWilliams
(Bloomington - United States)

I studied creative writing and published some poems. Then I decided to  get all up in education's grill. I'm currently a doctoral student in the Learning Sciences program at Indiana  University.
keywords: participatory culture, social media, education,  ...

Lesson 31: Logarithms

The lesson begins with an application problem to motivate the necessity and use of a logarithm. The formal definition linking logs and exponents is then introduced. Exercises in writing exponential equations as logarithms follows before a calculator based method for approximating logarithmic values is discussed. The common log, i.e. logs of base 10, is introduced and a procedure for solving common log equations with a calculator is presented, along with various caveats about proper syntax for the calculator. The lesson concludes with exponential modeling problems where logs may be employed to find the desired exponent.

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