NASA teacher's guide to building a Winogradsky Column to study microorganisms. When this guide was first released, students were invited to participate in two webcasts with NASA scientists. The conversations from those webcasts are...

Learn about all the different levels of ecosystems, from the living things under a rock, up to a rainforest biome. Explains the levels of organization within an ecosystem, the different types of biomes, food chains and trophic levels,...

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...

Learn what renewable energy is, the different types, and why it's important to conserve energy.

Looks at water pollution, its causes and impact, what individuals and governments can do to combat it, and the process of treating wastewater.

The element lead is a neurotoxin that is particularly dangerous to young children. Among other uses, lead compounds were common paint additives until being phased out for safer titanium-based additives beginning in the 1960's. Lead...

This project shows how mathematical probability sometimes contradicts our intuition. Despite the fact that there are 365 days in a year, if you survey a random group of just 23 people there is a 50:50 chance that two of them will have...

If you like to play Tetris then you might like this project. You'll learn something interesting about the mathematics of complex shapes.

Article reports on a new study that claims that the energy released from asteroid collisions may have sparked life on Earth. Includes a list of key vocabulary.

Play a great interactive game where you become a fire manager and learn to deal with fire safety. Also, explore the lesson plans for presentation and the classroom.

A question-and-answer site giving information about the Anasazi, an ancestral Pueblo people. There is a discussion of their languages, farming methods, architecture, and use of astronomy.

A comprehensive guide to teaching Beverly Cleary's Ramona books. Includes material available as web pages as well as PDF formats. Also provides the words of Cleary herself when discussing characterization, as well as some unforgettable...

The innovative resource compares snow and ice cover in the Northern Hemisphere over a period of 24 years. The images are obtained from satellite measurements of visible and microwave radiation. The activity has an interactive online...

Learners explore images of atmospheric ozone levels over the South Pole. The resource has students determine the months of lowest ozone levels and changes in ozone levels since 1979. The activity has an interactive online version and a...

Learners investigate images of Hurricane Katrina as it moved through the Gulf of Mexico in August 2005. The resource has students examine images, infrared radiation, water vapor, and visible radiation to plot and measure the path of...

Learners investigate the effects of zero gravity. The resource has students measure the change in the area of calf muscle from before and after the flight to determine if muscle loss has occurred. Some topics included are muscle loss,...

Features a collection of hands-on activities, investigations, and explorations designed to engage students in learning about ice, both in the solar system and on planet Earth.

Read about the unusual characteristics of a pterosaur discovered in Utah. Includes video.

Article reports on the science behind being "hangry" - a term that refers to the grumpiness that often accompanies hunger. Includes video.

The resource assesses students on British and metric conversions. There are tutorials on metric units, length, mass, volume, English units, symbols, and temperature. There is also an introduction and an interactive activity to test the...

This site features the works of Laura Ingalls Wilder.

Several lesson plans available for grades K-8 that take a look at math and art. Each instructional activity includes printable resources, glossary of terms, an artist biography, and national math and visual arts standards.

Students will create a food chain model and use it to describe the movement of matter among plants, animals, decomposers, and the environment. Resources include a detailed lesson plan, student handouts, pictures of a completed chain,...

Individual or classroom activity helps students understand the solar system because they can visualize it. Extension resources are included.