In the previous lesson, you made trundle wheels so that you can measure walking distances. Today, you’ll try them out and see how well they work.[br][br]If you do not have a trundle wheel, you can use an applet to simulate measuring. Your teacher will tell you which path you will measure. Measure the distance with a trundle wheel three times. Decide how to report the distance to the class. Be prepared to explain the reasons for your choice. [br][br]Record the diameter and number of rotations for each trial. Calculate the length of the path using each set of values.[br][br]1. Compare your results with the results of two other groups.[br]2. Express the differences between the measurements of the three groups in terms of percentages.[br]3. Discuss the advantages and disadvantages of the different measurement methods.[br][br]To use the applet:[br]• Choose a diameter for the wheel, and enter a number 1 - 5 for the path you will measure.[br]• Watch carefully to keep track of the number of rotations that the wheel makes before it stops.[br]• Check your count by clicking on the box, if you choose.[br]• Repeat twice with two different diameters for the same path, and compare your three results.[br][br]