Activity
US Department of Agriculture

Sink or Float?

For Teachers 2nd - 3rd Standards
Will it sink or will it float? Learners predict the outcome as they drop random objects into a container of water. Then, they keep track of the results and record the data in a t-chart to draw a final conclusion.
Interactive
CK-12 Foundation

Going Fishing

For Students 6th - 12th
Why do some things float and others sink? A creative simulation allows learners to adjust mass and volume of an object to affect its buoyancy in water. A graph records the effect of each manipulation.