Design, build, and test a paper seed model that spins or falls slowly to mimic how wind carries real seeds away from a plant.
Some real seeds, like the winged seed of a maple tree, spin like tiny helicopters as they fall, which helps the wind carry them farther from the parent tree before they land. This week you get to be the engineer and build your own spinning seed model out of paper.
A good design catches air to slow the fall and often spins on the way down. If your first design just drops straight and fast, that is useful information. You can change it and test again, just like real engineers do.
Mastery looks like: They build a paper seed model that demonstrates wind dispersal by spinning or floating when dropped, and explain one design choice that helped.
Common stumbles: Building a model too heavy or too flat to catch air; changing more than one part of the design at once, making it hard to tell what actually helped.