You will need:
Alka Seltzer tablets, or store brand equivalent
Fuji empty film canisters with lids-the clear white ones
Paper, markers, tape and scissors
Water

The first step is having your child decorate his "rocket". All tape must be away from the lid area, so the top won't be obstructed in any way. Work with the cap or top of the canister at the BOTTOM. He or she can make a cone to put on the top of the canister, so it looks like a rocket. Decorate the cone before taping onto the canister, then tape in place. Another option is to cut little "fins" for each side of the rocket and tape in place also.

When the canister is decorated you will be ready to add the "fuel". This is where the science experiment comes in. You will need to add water and a part of the Alka Seltzer tablet to the canister and seal it with the lid. But how much? Have each person guess what amounts may work. What happens? (The correct amount that usually works the best is 1/4 tablet added to the canister 1/4 filled with water. )

Add the tablet and water, put the lid on and place the rocket CAP DOWN on the ground. Now wait- in a couple of minutes the rocket will shoot up in the air from the pressure of the tablet creating gas in the canister and it becomes a rocket! You can do this experiment over and over, though your paper may need to be replaced after awhile.

Note: You can inquire at film developing studios or store film departments and they may give you a bag of Fuji canisters. Just ask!

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