1. **State the problem:** Investigate how the temperature of a rubber ball affects the maximum height it reaches after bouncing. 2. **Changing the temperature:** - Heat the ball using a water bath or warm air blower to achieve different temperatures (MP1). - Measure the ball's temperature accurately with a thermometer before each drop (MP2). 3. **Control variables:** - Drop the ball from the same height each time to ensure consistent initial conditions (MP3). - Use the same bouncing surface to avoid variations in elasticity or friction (MP4). - Ensure the ball is dropped from rest, not thrown, to maintain consistent initial velocity (MP5). 4. **Obtaining high-quality data:** - Measure the bounce height using a high-precision ruler or video analysis software for accuracy (MP6). - Test at least five different temperatures to observe trends clearly (MP7). - Perform multiple trials at each temperature and calculate the average bounce height to reduce random errors (MP8). 5. **Summary:** By systematically varying the ball's temperature, controlling key variables, and using precise measurement techniques with repeated trials, reliable data on the effect of temperature on bounce height can be obtained.