- Ask students to place the car model at the pointed reference point. In this step students will record the effect of changing the wheel diameter on the speed. Using the different wheel pieces given in the kit they should change them and test each one and fill in the worksheet how much distance (based on the metric ruler paper they should make calculations) did the car record on each set. At last they should chose one configuration to be their optimum choice.
- Students shall be considering changing the Pulley system configuration that has been made in the model. A pulley is a simple machine that can be used to lift objects and transmit motion from a mechanical part to another. In this model, the electrical motion from the Motor is linked through the rounded blue pulley attached to the motor and then transmitted to the wheels through a rubber band. Students now should test the three pulley configurations demonstrated in the worksheet and record the covered distance to then choose an optimal solution.
- One final optional step is that giving the students around 15 minutes to adjust the shape of the car to illustrate the effect of the Weight on the aerodynamics of the car. Several adjustments shall be done until the car breaks the last record of distance covered at the previous step.
- Ask the students to prepare a 3 minutes presentation to reflect on the test they have made with their classmates. Make sure all groups share their findings.
- At last, adjust your classroom configuration to host a race using the final prototypes made from each group and announce the winner based on the correct suitable adjustments they have made.
Lesson Assessment
- Collect the worksheets the students have filled to use as a reference for the grading marks you plan to decided.
- Randomly number each car model and ask students to vote for the best final design.