High schoolers investigate why some objects float or sink in water. In this physics instructional activity, students calculate the density of clay ball using a mathematical equation. They write a complete lab report about the experiment.

This open-ended boat building exercise is meant to be part of a three-lesson series on ships. Links to the other two lessons are included. This particular part is mostly a group lab activity in which they build a boat, find its load line...

Pupils research the implementation of a research vessel used for ocean exploration.  In buoyancy lesson students will construct a device that shows neutral buoyancy.