Pennies, Pressure, Temperature, and Light
Inverse Functions
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Objective
The major goal of this lesson is to collect data from a variety of experiments, and
then determine what type of model best fits the data, and explain why. Students will
explore a variety of relationships using pennies, pressure, temperature, light, and
pendulums to determine the algebraic equation that best represents the pattern
modeled by the variables involved in each situation.
Overview of the Lesson
The lesson begins with a review of the cooling curve and a discussion of the
algebraic model that best represents that data. The students are then assigned five
experiments involving distance and number of pennies that can be balanced,
pressure and volume, distance and light intensity, mass and distance from the
center in a see saw situation, and what determines the period of a pendulum. The
discussions generated by these experiments demonstrate the students' strong
background in functions and are a very important part of this video. Two of the five
experiments are discussed in the video, but all five are included in the written
lesson guide.
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