Straw Rockets materials: Rocket template (download here) Sharpened pencil Scissors Tape Soda straw Download your template. Decorate it! Insert the straw into your rocket. Now, blow into the straw! "Record your rocket's length and how far it travels using the template's data log. Next, make rockets of different lengths to see how that affects the results. (Vary the length by cutting the tube that forms the rocket.)"