This is an educator's guide for a unit on things that sink or float. It includes lesson plans, experiments, and activities. Young scholars apply the scientific method as they investigate whether objects sink or float.

Throughout the activities in this investigation, students may have wondered how a boat made out of steel, which is more dense than water, can float. This activity addresses that question. Students will see that changing the shape of an...

In this activity, students will learn about density by determining how to make an egg float in water. By the end of the instructional activity, students will understand that density and weight are different and that density matters in...

Students will explore matter that sinks or floats when submerged in water and that matter is categorized as either a sinker or a floater. Students will work actively in small, cooperative learning groups as well as gather in a whole...

Students find the densities of objects based on sinking or floating in this activity that demonstrates Archimedes Principle.

Students experiment with items that sink or float, and learn that water's density is equal to one, and objects/solutions with a density greater than one will sink, and those with a density less than one will float.

Students investigate with common objects to see if they can make something that neither floats nor sinks, but rather "flinks" in the middle.