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Handout
US Geological Survey

Usgs: Earth's Water: Lakes and Reservoirs

For Students 9th - 10th
The USGS reviews the differences between lakes and reservoirs. They discuss the history of freshwater and salt water lakes. Click Home to access the site in Spanish.
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Unit Plan
Scholastic

Scholastic: Study Jams! Science: Ecosystems: Aquatic Ecosystems

For Students 3rd - 5th
A video and a short multiple-choice quiz on the topic of aquatic ecosystems. It discusses the difference between freshwater and saltwater ecosystems, then explains what the three ecozones are in a marine ecosystem.
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Website
Geography 4 kids

Geography4 kids.com: Seasonal Wetlands

For Students 3rd - 8th
Identify the four types of seasonal wetlands found across the earth. There are fresh water and salt water marshes, bogs, and swamps.
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Handout
The BIG zoo

The Big Zoo: Saltwater Crocodile

For Students 9th - 10th
Virtual zoo site provides some fascinating facts on this largest living reptile. Contains a physical description as well as information on their habitat, diet, social structure and birth and offspring.
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Activity
Texas Instruments

Texas Instruments: Finding the % Salt in Seawater

For Teachers 9th - 10th
In this experiment, students are asked to collect data in order to prepare a calibration curve showing the relationship between the percentage of salt and the mass of salt water. Using this graph, students will be able to determine the...
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Lesson Plan
Utah STEM Foundation

Utah Stem Action Center: Floating on the Great Salt Lake

For Teachers 6th - 8th
Through exploring the phenomenon that it is easier to float on salt water than on fresh water, students will develop a conceptual model for molecules and how the arrangement of molecules affects density.
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Handout
US Geological Survey

Usgs: "Thirsty? How 'Bout Seawater?"

For Students 3rd - 8th
This U.S. Geological Survey website explains the desalinization method used by some communities to change sea water into drinking water. Click Home to access the site in Spanish.
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Handout
US Geological Survey

Usgs: Water Science for Schools Uses of Saline Water

For Students 3rd - 8th
This U.S. Geological Survey website explains a variety of uses for saline water. Pie graphs and bar graphs are used to illustrate the various uses. Click Home to access the site in Spanish.
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Handout
US Geological Survey

Usgs: Water Science for Schools Why Is the Ocean Salty?

For Students 3rd - 8th
This U.S. Geological Survey website offers one explanation of why the ocean is salty. Click Home to access the site in Spanish.
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Lesson Plan
The Wonder of Science

The Wonder of Science: 5 Ess2 2: Water Availability and Distribution

For Teachers 3rd - 5th
With these lessons, student can provide evidence to how water is distributed around Earth by interpreting graphs of the amounts and percentages of water in various reservoirs. On this site find work samples, phenomena, assessment...
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Unit Plan
PBS

Pbs Learning Media: The Water Planet

For Students K - 1st
75% of our earth is covered by water. Water can be found in oceans, lakes, rivers, groundwater, and sea ice. View these captivating photos of our earth showing the different water sources and images of our earth taken by NASA. Background...
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Lesson Plan
Science and Mathematics Initiative for Learning Enhancement (SMILE)

Smile: Changing the Freezing Point of Water With Salt

For Teachers 3rd - 5th
This lesson plan teaches first grade students basic chemistry and physics principles--that saltwater freezes at a lower temperature that plain water.
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Article
NASA

Climate Kids: 10 Interesting Things About Water

For Students 9th - 10th
Discover 10 very interesting things about water, including sources of life, ocean ecosystems, freshwater and ice, salt and salt water, sources of water, the body's water makeup, plant's consumption of water and the 3 states of water.
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Activity
American Chemical Society

Inquiry in Action: Changing the Density of a Liquid: Adding Salt

For Teachers 9th - 10th
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...
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Activity
TeachEngineering

Teach Engineering: Water Desalination Plant

For Teachers 7th - 8th
Students use a thermal process approach to design, build and test a small-scale desalination plant that is capable of significantly removing the salt content from a saltwater solution. Students use a saltwater circuit to test the...
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Website
Idaho State University

Idaho State University: Water Pollution

For Students 9th - 10th
Explore water pollution in surface water and groundwater and investigate the treatments for both. Also, check out what happens when salt water infiltrates the fresh water sources.
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Website
Canadian Wildlife Federation

Hinterland Who's Who: Wetlands

For Students 9th - 10th
Learn about Canada?s wetlands, what they are and where they are located. Wetlands are divided into two classes: freshwater and saltwater. They are further separated into four main types: ponds, marshes, swamps, and peatbogs. Discover the...
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Website
Canadian Wildlife Federation

Hinterland Who's Who: Estuaries

For Students 9th - 10th
Learn about estuaries, where the fresh water rivers meet the salt water of the oceans. The unique features of estuaries are explained, followed by a look into estuarine food webs. Next find out about the different plants and animals that...
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Activity
Climate Literacy

Clean: Effects of Increased Co2 in the Air on Seawater and Distilled Water

For Students 5th - 8th
Students perform an experiment comparing the impacts of CO2 on salt water and on fresh water. In a short demonstration, students examine how distilled water and seawater are affected differently by increasing carbon dioxide in the air.
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Activity
TeachEngineering

Teach Engineering: Solar Power

For Teachers 3rd - 5th
In this activity, students learn how engineers use solar energy to heat buildings by investigating the thermal storage properties of some common materials: sand, salt, water and shredded paper. Students then evaluate the usefulness of...
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Unit Plan
TeachEngineering

Teach Engineering: Engineering for the Earth

For Teachers 3rd - 5th
Young students are introduced to the complex systems of the Earth through numerous lessons on its natural resources, processes, weather, climate and landforms. Key earth science topics include rocks, soils and minerals, water and natural...
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Unit Plan
TeachEngineering

Teach Engineering: Environment

For Teachers 3rd - 5th
Through 10 lessons and more than 20 hands-on activities, students are introduced to the concept of an environment and the many interactions within it. As they learn about natural and human-made environments, as well as renewable and...
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Lesson Plan
TeachEngineering

Teach Engineering: The Keepers of the Gate Challenge

For Teachers 9th - 10th
Young scholars are presented with a real-life problem as a challenge to investigate, research and solve. Specifically, they are asked to investigate why salt water helps a sore throat, and how engineers apply this understanding to solve...
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Activity
TeachEngineering

Teach Engineering: Cell Membrane Experimental Design

For Teachers 9th - 10th
The final activity of this unit, which integrates the Keepers of the Gate unit through the Go Public challenge, involves students taking part in experimental design. They design a lab that answers the challenge question: "You are...

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