1. Turning coins Aim: To estimate a length of time (20 seconds) and discuss how different factors affect the results. Objective: To find out if reaction time makes a difference to the experiment. Year 8

2. Turning coins Discuss: Do you think that reaction time affects the results? Draw up your hypothesis.

3. Turning coins Use the computer programme that measures reaction time.

4. Turning coins Remember to print out your results and keep them safe.

5. Turning coins You’ll need to record the mean and median of the reaction time and decide which one is best to use.

6. Turning coins You will need to record the data on the main spreadsheet. Then create a graph of your results.

7. Turning coins Conclusion: Was your hypothesis correct? Discuss.