Despite seventy percent of the world's surface being covered with water, there is a potential shortage of this natural resource. Only a small percentage is fresh water and much of that is inaccessible or threatened. Learn about fresh...

The Center for Science in the Public Interest offers a discussion of contaminants that can be found in tap water and chemicals added to water in the public water systems. The topics discussed are arsenic, parasites, lead, turbidity, and...

Provided here is a pre-assessment to gauge student's knowledge of the role and importance of water in their daily lives. Can be revisited as part of the post-assessment. Student sheets are provided in English and in Spanish.

This comprehensive article provides information about the physical properties of water, the importance of water as an Earth material, the processes and cycles that water undergoes on Earth, its importance to life on Earth, and why we...

In this post assessment activity students review points covered in the attached unit and reach conclusions regarding the importance of water to human health. Student sheets are provided in English and in Spanish.

For this lesson students learn how much water is used and lost during a variety of common daily activities. Student sheets are provided in English and in Spanish.

Water can exist in three different phases. This still collage produced for Teachers' Domain features examples of water in liquid, solid, and gas states.

Water on Earth comes in many different forms. Students will collaborate as a team to locate forms of water on Earth. This in-depth lesson utilizes technology, specifically QR codes, to go on a hunt for where water is located on Earth...

Why is water necessary for life? Why is it the best and possibly only liquid to do the job? This illustrated essay from NOVA Online answers these questions, explaining why planetary scientists are on the lookout for water elsewhere in...

In a bioassay, a living organism serves as a detector for toxins-the same way canaries were used in coal mines to detect invisible toxic gases. In this project, water fleas (Daphnia magna), a freshwater crustacean, are used in a bioassay...

In this instructional activity students will create and investigate a simple model of the water cycle. Student sheets are provided in English and in Spanish.

Learn about the threat of lead in drinking water and what actions you can take to prevent or deal with exposure.

For this lesson students will explore and compare the physical properties of water and oil. Student sheets are provided in English and in Spanish.

In this lesson plan students investigate and compare the amount of water in an orange and an apple. Student sheets are provided in English and in Spanish.

In this lesson plan students are required to observe a simple model of the water cycle constructed of sand and ice in a plastic shoe box.

In this lesson students will investigate whether several common substances are soluble in water. Student sheets are provided in English and in Spanish.

By studying nature's filters, students learn about the importance of water quality for human health and agriculture.[4 min, 6 sec] Includes lesson plan and student handouts.

By testing your local water quality, you will be able to compare your results with students around the world. Register your class, and follow the project instructions. Additional teacher resources, references, and Ask-an-Expert sources...

Excellent site covers all types of water pollution. Hundreds of links including books, articles, organizations, specific topics.

For young scholars that have already been introduced to the water cycle, this lesson plan is intended as a logical follow-up. Students will learn about human impacts on the water cycle that create a pathway for pollutants beginning with...

In this instructional activity students will learn about water treatment and what happens to water when it goes down a toilet and drains into sewers. Through further investigation students will understand the relationship between water...

This environmental geology resource identifies the significance of our land's surface water. Review the sources of water and how they are processed and used.

Students construct a three-dimensional model of a water catchment basin using everyday objects to create hills, mountains, valleys and water sources. They experiment to see where rain travels and collects, and survey water pathways to...

A collection of downloadable, ready-to-use lessons and student worksheets aimed to raise awareness of the need for safe drinking water. Lessons are investigative in nature and utilize inexpensive materials that can be purchased at most...