Young scholars explore how fish are able to move easily from one depth to another in water.  In this fish lesson students create their own balloon fish. 

Students explore the impact of invention. In this invention lesson, students examine how inventions are on going and affect all aspects of life in both good and bad ways. Students will research the history of invention, become an...

Students explain what density is in their own words. In this physics lesson, students perform the condiment experiment and explain why some float and some sink. They share their findings in class.

Students explore letter Ww. In this letter recognition lesson, students participate in country, state, food, literature, physical education, colors, careers, music, and game activities that are linked to the main lesson page. Students...

Students examine how salt water is more dense than fresh water through experimentation with eggs.

In this density laboratory worksheet, learners complete 2 prior knowledge questions, then use the "Density Laboratory Gizmo" to complete several activities, answering short answer questions when finished.

Students discuss possible reasons for the Titanic sinking. They are split into small groups to research a historical figure involved in the sinking of the Titanic. They formulate a way to prove their characters guilt or innocence....

Students build a boat and make predictions. In this geometry activity, students design a cargo boat. They must show that the boat they designed can carry the cargo.

First graders investigate the changing states of water.

Learners examine how density is a value that describes what type of a material an object is made of regardless of its shape or size.

Students participate in a demonstration showing that as salinity increases density increases as well. They also examine the different densities of air. They discuss the amount of water displaced by large ships.

Why do some pop cans float in water while others don't? This easy experiment is a great example of the principle of density.

An experiment to determine if either a regular or a diet can of soda will float or sink when placed in water, and what causes this.

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 sort objects according to whether they sink or float.

A collection of interactives, videos, and documents on a variety science concepts.

For a dramatic illustration of density check out this demonstration. It's simple to do, only requiring a bowling ball and some water.

Become an engineer, and design a submarine that moves in the water like a real submarine. Try making it sink, float, and hover in the water.

Why do hot air balloons float? This resource from the NOVA Web site offers a series of interactive activities that illustrates the physics of hot air balloons.

Have you ever wondered how a ship made of steel can float? In this project you'll investigate how much weight boat hulls of various shapes and sizes can support without sinking.

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

In this science inquiry, learners investigate whether volume or density of objects determine the floating or sinking in water. Using a rock and a block of wood teachers engage students in the discussion of density, mass and volume.

A simple experiment in buoyancy where you discover how to make a packet of sauce or candy float or sink at will, and why you are able to do this.

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...