Slope Activity- Tootsie Pop

How long does it take to get to the end of a Tootsie Pop?

In this activity, you will measure the circumference of a tootsie pop over a period of time. The idea is to gather data, graph and make some predictions based on that data.

Objective:

    At the end of this activity you should be able to determine the slope of a line given at least two points, or a graph with at least two points plotted.

Part I: Data gathering

1. Unwrap your Tootsie Pop and measure the circumference (in cm) of the Tootsie Pop along its horizontal. Download the data table below, and record your measurement in the table below. Remember, your initial measurement for the circumference (y-axis) should coincide with your time (in minutes) at zero minutes.

   1. When instructed to do so, enjoy your Tootsie Roll for one minute. When your teachers says stop, or your hear the timer go off, remeasure the lollipop and record your data.

   2. Repeat step 2 until after the fifth minute of collecting data.

Part II: Graph your data.

    On the next page create a graph that represents your data. Be sure to use correct units and label each part of your graph. The x-axis is time and the y-axis is circumference.