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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.
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Activity
DiscoverE

Action Figure Diver

For Teachers 3rd - 8th Standards
Will your next buoyancy lab rise to the occasion? Make a splash with action figure divers! Teams of young physicists explore the relationship between mass and buoyancy by adding weights or balloons to achieve a diver that neither sinks...
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Activity
1
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Teach Engineering

Determining Densities

For Teachers 7th - 9th Standards
Don't be dense—use a robust resource. The second installment of a five-part Floaters and Sinkers unit has learners determine the densities of several objects. As part of the activity, they learn the displacement method for finding...
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Activity
University of Waikato

Temperature, Salinity and Water Density

For Teachers 6th - 12th Standards
The difference between sinking and floating may be a little salt. Young experimenters analyze the effect of salt and temperature on the density of water. They use their results to predict the effect of climate change on ocean ecosystems.
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Activity
PBS

Reading Adventure Pack: Oceans

For Parents 1st Standards
Flotsam by David Wiesner and The Magic School Bus on the Ocean Floor by Joanna Cole, illustrated by Bruce Degen, begin a reading adventure pack focusing on oceans. With story listening and thoughtful discussion, scholars complete several...
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Activity
Practical Action

Floating Garden Challenge

For Teachers 6th - 12th Standards
Climate change is affecting communities living in riverside areas by flooding land where crops used to grow. Using an array of instructional materials provided in this resource, you will have the opportunity to task your critical...
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Activity
Museum of Science

Design a Submarine

For Teachers K - 6th Standards
Don't just sink the boat. Using a closed container as a submarine, pupils experiment to see what to add to the container to make it float, sink to the bottom, and hover in the middle. After finding one option, learners see if they can...
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Activity
University of Waikato

Buoyancy in Water

For Teachers 3rd - 12th
Change where an object floats in water. Pupils experiment with a Cartesian diver by squeezing on the side of a plastic bottle. Learners pay attention to the bulb of the pipette as the bottle is squeezed to determine what is happening...
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Activity
1
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Teach Engineering

Clay Boats

For Teachers 7th - 9th Standards
Clay itself sinks, but clay boats float. Why? Young engineers build clay boats to learn about buoyancy. They test the weight the boats can hold using washers and then tweak their designs to make improvements, following the engineering...
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Activity
Exploratorium

Bubble Suspension

For Teachers 5th - 9th
Create a cushion of carbon dioxide gas to float some soap bubbles on. Many concepts can be demonstrated through this activity: Carbon dioxide gas is more dense than air Bubbles are semipermeable, allowing only carbon dioxide to diffuse...
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Activity
PBS

Watercraft

For Teachers 4th - 8th Standards
Whatever floats your boat—with some additional weight. The first activity in a five-part series challenges pupils to design a boat to hold pennies. Using the design process, learners design, build, and test their boats, making sure they...
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Activity
DiscoverE

Design a Flotation Device

For Teachers 3rd - 8th
Save the soup! Scholars devise a flotation device using straws, balloons, foam, corks, and other objects. A can of soup must stay afloat for at least a minute with this device—your dinner might depend on it!
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Activity
1
1
Teach Engineering

Rock and Boat

For Teachers 9th - 12th Standards
Present the class with a question on whether the water level of a pond will rise they take a large rock out of a boat and drop it into the pond. Groups come down on all sides of the question and try to justify their answers. The activity...
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Lesson Plan
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Center for Learning in Action

Properties of Balls

For Teachers 2nd - 5th Standards
Enhance your states of matter lessons with a hands-on science investigation that compares six different balls' color, texture, size, weight, ability to bounce, and buoyancy. 
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Activity
Exploratorium

Descartes' Diver

For Teachers 6th - 8th
Pique interest in water pressure, demonstrate buoyancy, and explore water displacement concepts with a homemade Cartesian diver. You may want to change the name of the toy, however, as is is not documented the Rene Descartes actually...
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Activity
Royal Society of Chemistry

A Cartesian Diver—Classic Chemistry Experiments

For Teachers 6th - 10th Standards
Sometimes the simplest experiments leave the biggest impression! Introduce young chemists to the Cartesian Diver by having them make one of their own. Use the Diver to further their study of liquids and gases, as well as compression.
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Activity
DiscoverE

Water Sampling

For Teachers 6th - 12th
What is the best way to test water quality? Using plastic bottles, scholars create monitoring sensors to test water quality. Creating three different sensors allows individuals to measure water quality at different water levels.
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Activity
1
1
Teach Engineering

Buoyant Boats

For Teachers 7th - 9th Standards
Eureka! Using the clay boats made in the previous lesson, learners investigate the idea of buoyancy and water displacement to finish the last installment of five in a Floaters and Sinkers unit. Their observations during the activity...
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Activity
It's About Time

Mass and Volume

For Teachers 7th - 12th Standards
Don't be so dense that light bends around you; study the relationship between mass and volume instead. Young chemists measure the density of a variety of liquids and solids. A reading passage and analysis questions introduce pupils to...
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Activity
Discovery Education

Motion in the Ocean

For Teachers 6th - 8th Standards
How do temperature changes affect ocean currents? Scholars explore convection currents by demonstrating the flow of water in a baking dish. They use ice, heat, and food coloring to see currents. Then, they draw conclusions about their...

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