There are many reasons for why we chose the materials we did for the rocket. We decided to use super glue instead of other types of glue because its stronger with close contact than any other glue, and we wanted our rocket to stick tightly together. We 3-D printed our nose cone because we could get it the exact shape and size we wanted it to be, so it can fit nicely with the other parts of the rocket. 3-D printing it also ensured us a design that was aerodynamic, and better flight. For the body, we decided to use thin cardboard tubing because it was a light material that did the job we needed it to do. It was big enough to fit all the things inside and it was nice and light. To keep our egg contraption together, we used duct tape which is a strong material that sticks nicely with the sponge used for the egg design.  For the parachute of the egg design, we wanted something that was big, yet flew nicely. We decided to use a plastic bag, which did its purpose wonderfully. The parachute held more air than the common parachute, and was worth the extra money. For the engine we wanted something strong yet clear so we could see what we were doing. It also had to be small enough to fit within the body tubing and big enough to fit the engine. We decided to use a clear plastic tubing which fit all the needs we were looking for. The engine was secure inside and it fit within the rocket. Lastly we decided to use cardboard as the fins because it was a sturdy yet somewhat light material that we can cut into small versatile pieces that were aerodynamic for flight. Everything we used on the rocket was meant for aerodynamics, cost, weight, and the jobs they could perform.