丽声百科万花筒 · 丽声第三级
Floating Boats
Let's make boats! Will this float?
We put a bowl in the water. Yes, it floats. Will these float?
We put some marbles in the water. No, they sink. Put some marbles in the bowl!
We put some marbles in the bowl Now they float! Will this float?
We put a clay ball in the water. No, it sinks. We made a clay boat.
