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Last modified 3.3.03


Torn Paper

 

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Audience: Preservice teachers of grades K-8

Expected time: 45-60 minutes

Overview of Module: Doubling is an example of exponential growth. The problem in this lesson involves powers of two. Students are presented with the following problem: If I tear a piece of paper in two, place one sheet on top of the other, tear again, place the sheets on top of each other, tear again, and so on, until I have torn and stacked twenty times? How high will the stack be?

This module could be used as an introduction to Exponential Functions.

Goals:

  • Students use a variety of methods to solve a real world problem involving exponential growth.

Prerequisites

  • Students need basic knowledge of measurement, ratio and proportion, algebra.

Mathematical Concepts:

  • Exponential functions
  • Graphing
  • Measurement
  • Problem Solving