2. In the original lesson we learned that a robot should move forward a specific distance for each rotation. That distance traveled is equivalent to the circumference of the wheel multiplied by the number of rotations. 360° = 1 full rotation of a wheel We created a standard formula that works regardless of the size of the wheel.

3. We are going to use this formula to test the accuracy of our programming. Using the properties of proportions we cross multiply to solve for X°. We divide both sides of the equation to isolate and solve for X.

4. Create a program for your robot to travel 30 cm, for each of the three wheel sizes to be tested.

5. Wheel Size Predicted Motor Degrees Actual Distance Traveled (cm) Average of Actual Distance (cm) Run your program three times for each wheel size. Record your data in the following table (as on your worksheet).

6. % of Error = Using the data from the worksheet, we shall calculate the effectiveness of our programming. Size of WheelPercent of Error If your percent of error is equal to or less than 5% this is an accurate and efficient program.