If this approach doesn't work for you, try developing an activity with instructions that improve students' technical reading skills. Guidelines for balloon powered cars Balloon powered cars will be used to help you learn about aerodynamics, wheel alignment, friction, force, energy, pulleys, Newton's Laws and how a wheel and axle work together. You will design and build a balloon powered car that works on the action-reaction principle. Your imagination will determine the appearance of your solar car. You are required to have one or more extensions on your car.
Extensions increase the length of the car or support the balloon.
The balloon provided is the only size allowed in the final race. The car must have two different types of wheels that spin on the axles. One set of wheels has both wheels turning at the same time and both wheels turn with the axle. The other set of wheels must turn independently of each other. One wheel turns, but the other does not.