How to build a working model of a submarine?

Answer 1

First of all, a 'working' model doesn't necessarily mean on its own. What you can do is make make a pinata of it by taking a small blown-up balloon, and gluing strips of cut-up newspapers all over it, but be sure to let the tied end of the balloon poke out from under the newspaper. Then it's time to add features. You can cut out triangles of cardboard and glue them on as fins or wings, and simply glue them where you want to make it look more realistic. After that, you'd need a motor. Again, it doesn't have to move on its own. I suggest you use a small pinwheel, and cut off the straw part on the bottom until it's about an inch long. Then, simply tie it to the end of the balloon that is sticking out of the newspaper. Lastly, paint it how ever you want! Since it has to be a working model, when you present your submarine, blow on the pinwheel and it'll spin like a real submarine motor! And that's how you build a working model of a submarine! :)