This site offers information on many aspects of water, including text, pictures, data, maps, and an interactive center where users can offer opinions and test their water knowledge. Main topics include: water basics, Earth's water, water use, and special topics such as acid rain, saline water and other water-quality issues. Links to other water-related sites are also provided. Full description.

This lithograph provides a full-disk view of Earth photographed by Apollo 17 astronauts, Dec. 7, 1972. The accompanying text describes the view seen in the photograph and the circumstances in which it was taken. Suggestions for activities in which the photograph can be used are also provided. Full description.

This learning system provides a variety of materials on Earth and space sciences, such as images, movies, animations, and data sets. Students, teachers, and the general public can access information on the sun and space weather, astronomy, our planet and solar system, current space missions, space-related mythology and art, and geology. For teachers, there are links to tools for navigating the site, ... Full description.

This kids page offers printable drawings to color, games, and puzzles. While performing these activities, students will learn about the TOPEX/Poseidon satellite and its mission to study the oceans. Full description.

Younger students can follow Echo the Bat as he travels through Arizona on an adventure to his winter hibernaculum. They will also learn how bats use echolocation to catch insects, then about remote sensing by satellites and the use of satellite imagery. Full description.

This site contains pictures of Near Earth Asteroid Rendezvous (NEAR) instruments and satellites that can be downloaded and colored by students. Kids can send their pictures to NASA for display. Full description.

Fourth and fifth grade students can participate in these lessons and classroom activities concerning plants and plant science. Each lesson in this program is interdisciplinary, and is designed to introduce students to plant science and increase their understanding of how food grows. Students will identify the different parts of plants, what is needed for plants to grow, and learn about plant life ... Full description.

Teachers can access a variety of lesson plans and activities on plants. The lessons in this program are interdisciplinary, and are designed to introduce students to plant science. Each lesson plan features introductory and background information, instructions, additional materials for deeper study, and resources lists. A glossary and links to other related sites are also included. A Spanish translation ... Full description.

This set of posters contains images of the Sun, the nine planets, Earth's moon, the moons of Jupiter, asteroids, and comets. Each poster features a brief description of the image, some statistical facts, and significant dates in the study of these objects. Full description.

This teacher's guide for rocketry presents the history, scientific principles and mathematics of rockets through problem-solving and cooperative learning activities. These activities demonstrate the physical principles behind the operation of rockets. Full description.