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Educator Guide

Earth's Freshwater

Earth's Freshwater

Most people have heard Earth referred to as "the water planet." With that name comes the rightful image of a world with plentiful water. In photographs taken from space, we can see that our planet has more water than land. However, of all the water on Earth, more than 99 percent of Earth's water is unusable by humans and many other living things - only about 0.3 percent of our fresh water is found in the surface water of lakes, rivers and swamps.The teacher guide describes our current understanding of water cycling and freshwater issues that affect natural and human communities.

Grades

3 - 8

Subjects

Earth Science

Contents

8 PDFs, 12 Videos

For the complete educator guide with media resources, visit: http://www.nationalgeographic.org/media/earths-fresh-water/

In photographs taken from space, we can see that our planet has more water than land. It is unexpected and somewhat inconceivable that less than three percent of Earth's water is fresh water. According to the U.S. Geological Survey, most of that three percent is inaccessible. Over 68 percent of the fresh water on Earth is found in icecaps and glaciers, and just over 30 percent is found in ground water. Only about 0.3 percent of our fresh water is found in the surface water of lakes, rivers, and swamps. Of all the water on Earth, more than 99 percent of Earth's water is unusable by humans and many other living things! It seems extraordinary that the water that supports all terrestrial, as well as aquatic, life on our planet is actually so scarce. With this stunning realization comes a recognition that we have to utilize this resource very wisely. An important first step is to educate ourselves and future generations of citizens.

We can make better consumer, voter, and community member choices when we are informed about how we use resources, the ramifications of misuse, and solutions and actions to prevent fresh water issues. This guide was developed to support teachers in teaching topics with real-world context, and provide them with the background to feel competent and comfortable when teaching about fresh water. It provides a solid introduction to fresh water in an accessible and reader-friendly manner. In addition to general information about fresh water, the guide includes numerous education features, such as teaching tips and student thinking, that help to connect the content to classroom practice.

Scroll through our resources above and click to download the book or individual chapters. Having trouble downloading? Use the links below.

Earth's Freshwater: Full Teacher Guide
Chapter 1: Biodiversity in Freshwater
Chapter 2: Water Cycle and Water Reservoirs
Chapter 3: Changing Natural Flows of Water
Chapter 4: Water Quality in Freshwater Systems
Chapter 5: Water Concerns for Wildlife and Humans
Chapter 6: Water Rights and Human Communities
Chapter 7: Water Solutions for Our Future