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.

In this project, you'll learn how to isolate DNA from onion cells, separating it from other cellular components in a manner that still preserves its structure and sequence. In the end, you'll have enough DNA to see with the unaided eye,...

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...

You're playing Monopoly with a friend, and you've already got Park Place and you really, really want to get Boardwalk. If you're on Pacific Avenue, what are the chances you'll reach your goal? Here's an easy project that will show you...

What does it take to launch a satellite to explore Mars, or a mission to the moon? This project has several possible variations for exploring the physics of rockets. This is rocket science.

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...

Microbes are everywhere in our environment, but for the most part they escape our notice. This project shows you how to safely culture and study common bacteria from your everyday surroundings.

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

This a straightforward, but interesting, project in geometry. It is a good first proof to try on your own. You should be able to figure it out by yourself, and you'll gain insight into a basic property of circles.

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.

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,...

This lesson plan contains a PowerPoint and other downloadable resources on World War I and Alabama.

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.