First, the Walker will walk for one minute, trying to hold his or her speed constant the whole time.  Follow these steps:

• Decide the Walker’s route in advance, so no one gets confused and has to stop walking.
• When everyone is ready, the Timer says “Go!” and starts the stopwatch.
• The Walker begins walking, counting his/her steps as he/she walks.
• Every ten seconds, the Timer says “Time!” and the Walker calls out the number step he/she is on at that moment.  The Walker must not break stride as he/she does this, and must not stop counting (don’t start over)!
• When the Walker calls out the number, the Recorder writes it in the appropriate place on his/her data sheet. (Pages 2 and 3 are the data collection sheets for this activity and the next one.)
• The Observer, if there is one, cheers the Walker on and tries to make sure no one trips on anything.
• After one minute, the Walker stops, and everyone switches roles.  The activity should be repeated until each person has done each job.

Once each person in your group has done each job, you’re ready for the second activity.  In this one, the Walker will try to accelerate while walking.  What does accelerate mean?  Discuss this with your group before proceeding.  Then follow these steps:

• As before, the Timer calls “Go!” and the Walker begins walking, but this time he/she begins very slowly and speeds up.
• As before, the Timer calls “Time!” every ten seconds, and the Walker tells the Recorder the number of steps at that moment.
• After one minute, the Walker stops and everyone switches jobs.  Repeat until each person has done each job.

If you finish early, go cheer on some of the other groups.  Remember, you will be with these people all semester, you should get to know them!

The data collection sheets are on pages 2 and 3.

Activity One: Constant Speed

Walker: _________________________________Walker: ________________________________

 Walker: _________________________________Walker: ________________________________

Activity Two: Acceleration

Walker: _________________________________Walker: ________________________________

 Walker: _________________________________Walker: ________________________________