Curated OER
environment: Fresh and Saltwater Habitats
Students compare and contrast fresh and salt water coastal environments. After describing how sea animals adapt to their habitats, they design a variety of sea creatures and explain how the adaptations aid in the animals' survival. ...
CK-12 Foundation
Mineral Formation: Evaporating Lake
Get crazy for crystals! Junior geologists learn the secrets of crystal formation through lecture, reading, and examples. Other topics include common ionic compounds found in fresh and salt water, the effects of location on forming...
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
Ocean Habitats
Students examine the water samples from a demonstration and discuss the difference between fresh and salt water. They draw different animals that live near or in the ocean and how humans can harm the ocean habitat. They draw pictures of...
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...
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...
Curated OER
Salt Water Wedge
Students conduct an experiment to observe the properties of both salt and freshwater. They explain why freshwater will stay at the surface while salt water will travel up a river bottom because of density. Students also research the...
Georgian Court University
Introduction to Marsh Ecology
Compare and contrast the characteristics of fresh and salt water marshes. After exploring the typical plants and animals found in each marsh type, participants use a set of flash cards to sort into fresh and salt water marsh life. Their...
Curated OER
Sea Water Freeze
Middle schoolers observe how salinity affects the time it takes water to freeze. They participate in an experiment to determine that ice is essentially salt-free whether formed from fresh or salt water
Curated OER
Comparing Fresh and Salt Water: Venn Diagram
In this Venn diagram worksheet, students compare and contrast fresh water and salt water. Worksheet includes a link to additional activities.
Curated OER
Sunken Millions
This PowerPoint provides a game show format with multiple choice questions about fresh and salt water. Topics include sources of water, water geography, uses of water, and the water cycle.
Curated OER
Tides in the Hudson
Students view an illustration of the Hudson River watershed and identify the bodies of water shown. They discuss what happens when fresh and salt water mix. Students view a teacher demonstration of the stratification of fresh and salt...
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
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
The Sun as the Driving Force of the Water Cycle
Learners study the water cycle and how the sun is an important factor. For this water cycle lesson students investigate how to desalinate water and explore the different densities of fresh versus saltwater.
Curated OER
Properties of Fresh and Sea Water
Middle schoolers work with three stations to demonstrate the properties of water. They explore water's boiling point, freezing point, and its ability to store heat.
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...
Alabama Learning Exchange
Presenting the Water Cycle
Third graders complete a unit of study about the water cycle using both print and Internet based resources. They examine fresh and salt water and complete an online quiz before developing a multimedia presentation highlighting the phases...
Curated OER
Surface Water and Groundwater
Students examine distribution of water and minerals. In this surface and groundwater lesson, students conduct an experiment with fresh and salt water making hypothesis and drawing conclusions about minerals.
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...
Utah LessonPlans
Water, Please!
Pupils use a globe and cups of water to illustrated the amount of water versus land on earth and the amount of fresh versus salt water available to plants and animals.
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
Melting the Ice: Energy Transfer
Students study thermal energy and energy transfer to sea ice processes. In this energy transfer instructional activity, students make their own ice cream and discuss energy transfer and thermal energy. Students view a radiation overhead...