T asks if they care how high it goes up, Ss reply that length of time rocket is in the air is important to them. T asks what forces they will have to contend with. Ss identify forces. T prompts, they identify no more forces. Ss to describe how the bottle will be a rocket, S describes verbally and gesturally.
T notes the interesting shape of the bottle's nosecone.
Ss explain how they will make nosecone. T asks about the relationship between aerodynamic shape and forces. S replies, T expands on reply. T continues expansion on friction and gravity, B nods, J plays with bottle. J responds, T expands on scenario while J traces trajectory with bottle.