What makes something sink?
Density
What is density?
How much space something takes up in relation to how heavy it is.
What is it? Sink or float?
Sink
What is it? Sink or float?
Float
What is it?
A Boat
What material can you use to make your boat?
Aluminum foil, cardboard, plastic...
Will it be a strong boat? Why or why not?
....
Will it be a strong boat? Why or why not?
...
What can you use to test how strong your boat is?
Paper clips, lego, pens and pencils etc.
