University of Florida
Florida Museum of Natural History: Investigating Water
This guide engages children in the process of scientific inquiry using the context of a favorite early childhood pastime-water play.
Science Education Resource Center at Carleton College
Serc: Water Activity
Students investigate water by estimating how long it takes to freeze, then see if the ice cube will float in water, and eventually work with other items to see if they sink or float in water.
Utah Education Network
Uen: 1st Grade Act. 24: Interactive Writing
In this lesson, students will listen to nonfiction books about items that sink and float. Students will participate in filling in words to fill in a teacher-created chart that is connected to the information. Students will then write a...
National Association of Geoscience Teachers
Nagt: Density Mystery Canisters
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.
Utah Education Network
Uen: 1st Grade Act. 01: Exploration Tubs
In this lesson, students will investigate different categories related to safety, organisms, sink or float, boats, seeds, and water droppers. Students will use exploration tubs to make observations.
Museum of Science
Museum of Science and Industry: Online Science: Design a Submarine
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.
Alabama Learning Exchange
Alex: Teaching Measurement: Literature and Manipulatives
The tradebook, Who Sank the Boat? by Pamela Allen, is an excellent tool in teaching measurement. Students will engage in activities involving different types of measurement. In the story, five animal friends decide to take a boat ride....
PBS
Pbs: Buoyancy Basics
NOVA explores the basic principle of buoyancy. Also included at this site are some interesting brain-teasers related to the topic.
Bill Nye
Bill Nye: Eggs Speriment
Try this at-home science experiment to learn if salt affects the way things float.
PBS
Pbs Teachers:mysteries of the Deep: Leaky Seal
Investigate the mystery of the sinking of the Confederate submarine Hunley. Explore the mechanics of waterproofing a seal, and compare and contrast the effectiveness of a metal-to-metal seal versus one that uses a rubber gasket.
Science is Fun
Science Is Fun: Dancing Raisins
An experiment in buoyancy which involves making raisins float by using carbonated soda pop. Students then try the same test with other materials. Instructions for making one's own carbonated liquid are also provided.
Michigan Reach Out
University of Michigan: Paper Clip Sailing
Basic experiment that helps students learn about surface tension.
TeachEngineering
Teach Engineering: Floaters and Sinkers
Through this curricular unit, students are introduced to the important concept of density. The focus is on the more easily understood densities of solids, but students may also explore the densities of liquids and gases. Students devise...
American Chemical Society
Inquiry in Action: Changing the Density of an Object: Adding Material
In this activity, students see that a can of regular cola sinks while a can of diet cola floats. As a demonstration, bubble wrap is taped to the can of regular cola to make it float. This high-volume but light-weight material increases...
American Chemical Society
Inquiry in Action: Changing the Density of an Object: Changing Shape
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...
American Chemical Society
Inquiry in Action: Defining Density
Do heavy things always sink and light things always float? In this introductory demonstration and activity, students are introduced to the concept of density as they explore a rock and a wooden block in water.
American Chemical Society
Inquiry in Action: Compare the Density of an Object to the Density of Water
In this activity, students use tea light candle holders and a student-made balance to compare the weight of equal volumes of wax, water, and clay. Students will discover that since the wax weighs less than an equal volume of water, it is...
American Chemical Society
Inquiry in Action: Changing the Density of a Liquid: Adding Salt
In this activity, students will see that a carrot slice sinks in fresh water and floats in saltwater. Considering the placement of the carrot slice in water and salt water, students will infer that the density of salt water must be...
American Chemical Society
Inquiry in Action: Changing the Density of a Liquid: Heating and Cooling
In this activity, students will investigate whether the temperature of water affects its density. Students will place colored hot and cold water in a cup of room-temperature water to see that cold water sinks while hot water floats. Then...
University of Colorado
University of Colorado: Ph Et Interactive Simulations: Balloons & Buoyancy
Experiment with a helium balloon, a hot air balloon, or a rigid sphere filled with different gases. Discover what makes some balloons float and others sink.
TeachEngineering
Teach Engineering: Down With the Clip!
Students see how surface tension can enable light objects (paper clips, peppercorns) to float on an island of oil in water, and subsequently sink when the surface tension of the oil/water interface is reduced by the addition of a...
TeachEngineering
Teach Engineering: Floaters and Sinkers
This lesson introduces students to the important concept of density. The focus is on the more easily understood densities of solids, but students can also explore the densities of liquids and gases. Students devise methods to determine...
American Chemical Society
Middle School Chemistry: Chapter 3: Density
Six interactive chemistry lessons about density complete with handouts and animations.
Sesame Street
Sesame Street: Games
Help the Sesame Street characters while completing various early learning tasks. Students will develop language, reasoning skills, and independence as they play the games provided.
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