Question

build a bottle car
4 bottle caps, 2 short sticks, empty bottle, clay dough, hammer and nail
prepare the axles. ask an adult to make two holes on each side of the bottle, using the nail. the holes should line up.
prepare the wheels. ask an adult to make a hole in the center of each cap, using the hammer and nail.
think it through
1 draw and label each of your materials. then write a sentence telling how it will be used in your experiment.
hint what will you do to make the car go faster or slower?

materials	how they will be used

Explanation:

Each material's use is tied to constructing the bottle car's wheels and axles, as outlined in the experiment steps.

Answer:

Materials	How They Will Be Used
4 bottle caps	Function as the wheels of the bottle car
2 short sticks	Act as axles to hold the wheels in place
Clay dough	Secures the axles to the bottle to prevent shifting
Hammer and nail	Creates holes in the bottle (for axles) and bottle caps (to attach to axles)