Curated OER
The Floating Egg Problem
This is the grown-up version of the classic "float an egg in salt water" experience, plus an experiment in soap making. High schoolers explore density, but more importantly, practice accuracy, precision, and the use of significant...
Curated OER
What Floats Your Boat?
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...
American Chemical Society
Changing the Density of a Liquid - Adding Salt
Fourth in a set of several little lessons on density, this one compares the density of fresh and salt water. First by demonstration, and then by a hands-on activity, learners find that adding salt increases the density, as is evidenced...
Centers for Ocean Sciences
Ocean and Great Lakes Literacy: Principle 1
Is your current lesson plan for salt and freshwater literacy leaving you high and dry? If so, dive into part one of a seven-part series that explores the physical features of Earth's salt and freshwater sources. Junior hydrologists...
Curated OER
Sink or Float?
Students predict and explore to discover which objects sink or float in fresh and salt water, predict how salt affect objects, write predictions on T chart, discuss difference between man-made and natural waters, and graph results.
Curated OER
Note Taking And Skills And Lab Reports
Students perform simple and fun experiments to use the scientific method, take careful notes, and write a lab report. They first make and test a hypothesis about how many drops of water they can fit on the face of a penny and then test...
Curated OER
Freshwater/Saltwater "Eggs-Periment"
Students explore water properties by conducting a class experiment. In this buoyancy instructional activity, students utilize freshwater, saltwater, plastic cups, hard boiled eggs and food coloring to experiment with the floating...
Curated OER
One World Ocean
Students compare and contrast the properties of salt water in the oceans/seas and freshwater elsewhere on the planet. They also analyze mixing caused by currents in the ocean, including the effects of warm and cold water as well as with...
Curated OER
Soap, Wood, and Water
Pupils measure the properties of two different types of soap and wood and calculate their densities. Then they predict whether or not whether or not each object would float or sink in fresh or salt water.
Curated OER
Making and Using a Hydrometer
Students build a hydrometer to measure the densities of fresh and salt water samples. They record the water temperature and density and use the temperature, density, and salinity conversion graph to locate the salinity. Finally,...
Curated OER
Sea Activities
Students explore the sea. In this biology lesson plan, student investigate sea creatures, and sea water. Students discover how to convert sea water into fresh drinking water as well.
Curated OER
Exploring the Properties of Matter in the Preschool
Students study the properties of the physical and natural world. In this properties of the physical and natural world lesson plan, preschool students work at discovery tables to see how simple machines work, what happens when items are...
Curated OER
The Weight of Water
Students participate in an experiment about the weight of water. They work together to discover that seawater is more dense than fresh water. They also determine which objects float and sink.
Curated OER
Science Lesson #2
Fourth graders explore and experiment with objects that float to see if they float differently in salt water or fresh water. After the experiment, they write a paragraph in their science journal explaining how fresh water and ocean water...
Curated OER
A Salty Experiment
Students study salty and fresh waters. In this harbor estuary lesson plan students complete a lab activity on salinity and describe what happened.
Curated OER
Exploring Density with Salt and Fresh Water: Part 5
This particular lesson was written by the National Earth Science Teachers Association, but density is a concept that you can teach at the beginning of the school year in your life, physical, or earth science classes. It would be fun to...
Curated OER
Oyster Gardens - No Soil Required!
Explore the practice of oyster gardening. Because oysters play a vital role in marine ecosystems and their populations have declined, biologists are transplanting oyster seed to repopulate reefs. After learning about this practice,...
Poetry Society
The Jumblies
Who would ever think to go to sea in a sieve? Only Edward Lear's Jumblies! The poem "The Jumblies" is the inspiration for these poetry reading and writing activities that ask learners to think about how strangers are different, consider...
Curated OER
Ray Crossword Puzzle
In this ray worksheet, students complete a ten question crossword puzzle with words that pertain to rays. There is a word bank provided.
Curated OER
Ray Multiple Choice Activity
In this ray worksheet, students complete a ten question multiple choice activity pertaining to sea rays. Prior knowledge is assumed.
Curated OER
The Weight of Water
Students examine how salt water is more dense than fresh water through experimentation with eggs.
Curated OER
Antarctica: Effects of Salinity on Icebergs
Students investigate the effects of salinity on icebergs. In this hands on lesson, students design and conduct an investigation into how the amount of salt in ice affects its buoyancy.
Curated OER
Black Hawk Island Hike
Students explore Wisconsin's natural and cultural history through hands-on exploration of Upham Woods. They are shown the basic paddling skills and they work in teams to paddle across the river on barge. Students describe cultural...
Curated OER
Advanced Critical Reading: Salt
In this critical reading worksheet, students read a passage regarding salt then answer three questions based on the reading.