Required Resources

• Timer One will need a stop watch to record time for each perimeter segment.

Optional Resources

• Forms Provide the information as indicated below.

  • Constant Rate
• Checklists (Rubrics) Use this rubric to guide you through this activity.

  • Constant Motion

Steps

1. Safety Precautions Before starting this activity, be sure of safety hazards along the perimeter of your school site. Be attentive to adjacent traffic. Be sure that everyone involved knows the path that is to be taken. Calibrate Your Step If you have not yet calibrated your step, do so now using the Calibrate Your Step tool. Calibrating Your Step Constant Motion The challenge is to try to maintain a constant rate of displacement as you go along the perimeter of your school site's property lines. To determine this, someone will need to record distance traveled and time to cover the distance. This needs to be done for each section. Refer to diagram Perimeter Motion below. Note that the distance measurements are in feet. You will need to convert feet to meters. Perimeter Motion Graphic Record Data on Diagram Create a diagram similar to the example above. Record distance and time data for each section. If you have AppleWorks, the attached file below might be of use. Modify according to your school's parameter. Perimeter Motion Draw File (Clarisworks) Compile Data and Graph Compile your data in table format, using a spreadsheet program. Refer to example below. If you have AppleWorks/ClarisWorks, the supplement below is set up for you to replace data with your own. Graph the data as indicated in graphic below. Motion Data Table and Graph Motion Data Table and Graph (ClarisWorks) Share Results Share your results by entering the indicated informaton into the data form Constant Rate. You will be required to: calculate speed for each segment found along the perimeter calculate total distance traveled in meters determine sources of error for your class You will not be able to identify errors until all student results are viewed.

Learner Notes

• This activity is a gateway lesson. The data collected with this activity will be used in a series of activities. At the conclusion of this activity, you will have scalar quantities. The activities that follow will have students determine displacement and velocity, both vector quantities.