How do I create a Mars lander that will slow down to land successfully using these materials: Styrofoam cup (Heatshield to contain payload)
3 bendy straws
3 coffee filters
6 index cards
12 Rubber Bands (Max) or pieces of string/yarn
6 mini marshmallows
1 normal size marshmallow (payload)
Scissors
12 inches or 30 cm of tape (1 ruler length)