Third Step

Testing and Analysis

• Initial knowledge: (Day 10)

  • Guide students on how to conduct controlled experiments to measure the car's performance (distance, time, speed).

  • Explain how to analyze experimental data and identify sources of error.

  • Discuss the concept of energy efficiency.

• Activities: (Day 10-11)

  • Testing: Students conduct multiple trials of their mousetrap car, carefully measuring its performance parameters.

  • Data Collection: Students record their experimental data systematically.

  • Kinematic Analysis: Students use their data to calculate the car's average speed, acceleration (if measurable), and distance.

  • Mechanical Advantage Evaluation: Students analyze how their design choices (lever arm, wheel size) influenced the car's performance. They should relate their observations back to the principles of mechanical advantage.

  • Friction Analysis: Students should (if possible with available tools) analyze the impact of friction on their car's performance.

• Resources:

  • Measuring tapes, stopwatches.

  • Optional: Motion sensors, photogates for more precise measurements.

  • Spreadsheet software for data analysis.

• Feedback:

  • Guidance on experimental design and data collection methods.

  • Support in analyzing experimental data and identifying trends.

  • Feedback on the connection between their design choices and the observed performance, particularly in relation to mechanical advantage.