Lesson: Making a Bar Graph

Check the stop point and see if the motor always stops at the same point.

Learn how to collect the data and make a graph.

• Record the difference between the start and stop in degrees in a table.
• Make a bar graph showing the results of the 10 trials.

Create a second graph with a different power level.  Label the graph so we can understand the power level.

• Can you add friction to the motor? How? __________
• Will it affect the accuracy? __________
• What are the three ways to control how a motor spins?

1. __________
2. __________
3. __________

• Which do you think is the most accurate? __________
• Is there any Gear Slop in the motor? __________
• What is Gear Slop? __________