Construction Tools/Materials and Procedure

Materials:

• two tennis ball canisters with tops
• an 18 inch piece of tape

Tools:

• scissors
• marker
• protractor
• compass

Procedures:

1. Draw and cut a circle into the side of one of the tennis ball canisters so the hole is big enough to fit the other canister on it.

  

2. Lay the second tennis ball canister on the hole you cut out in the first canister.

3. Use the protractor to measure a forty-five degree angle with the canisters.

4. Cut the tape down the middle so you can have more tape avaliable.

5. Secure the top canister onto the bottom one with the tape.

6. Tape one of the lids from either canister to the bottom so it is on the flat surface and connected to the canister like the images shown below:

7. Use the sharp metal end of the compass to put the ignition hole on the bottom right side of the combustion chamber.

The final result of your cannon should look just like this: