Learn how to calculate the surface area and volume of rectangular prisms and cylinders. Four interactive animations, preceded by simple instructions, guide you through the process of calculating area and volume.

A look at some of the methods and problems with forecasting volcanic eruptions.

An eight-part professional development workshop for 7th-12th grade teachers.

Philip Armour, an industry titan in the meat industry, made his money by exploiting the need of his workers for jobs. Read about the deplorable conditions the workers endured in the packinghouses and in the shanty towns in which they...

A complete learning module on microbial diversity that includes a downloadable textbook chapter, teacher guide, and lesson activities. The chapter can also be viewed online. In addition, there are animations, images, a video, and...

A complete learning module on emerging infectious diseases that includes a downloadable textbook chapter, teacher guide, and lesson activities. The chapter can also be viewed online. In addition, there are animations, images, a video,...

Learn about Newton's Laws of Physics, g-force, the causes of motion sickness, and more by reading about different rides at an amusement park.

This student observation guide walks learners through setting up an investigation of the seasons and their causes. Students can report their actual data right there on the page.

This site from Learner.org illustrates the inner and outer workings of Renaissance art and architecture in the Italian city of Florence. It also provides an example by noting some works by Michelangelo and Botticelli.

Study four types of learners (heritage language learners, those with learning disabilities, with different learning styles and in different levels)and the issues related to each. Read strategies of other teachers and describe strategies...

An informative presentation on earthworms that answers questions associated with ecology, conservation, life cycle, and characteristics.

A comprehensive presentation that answers a number of questions about gray whales. In addition, there are challenge questions, lessons, and activities that can be used in the classroom. the migratory pattern of this whale is also tracked.

A comprehensive resource on earthworms, offering the following sections: "Facts about Earthworms," "Migration and Annual Cycle," and "Lessons Activities and Information."

A comprehensive resource that deals with the characteristics, life cycle, ecology, and conservation of the Oriole. In addition, there are lessons and activities that can be used in the classroom. The migration and annual cycle are also...

A comprehensive resource on hummingbirds, organized into the following sections: "How to Track Hummingbird Migration," "Migration Updates," "All About Hummingbirds," "Lessons, Activities, and Information," "Challenge Questions," and "Ask...

A comprehensive presentation that answers a number of questions about frogs. In addition, this resource contains lessons and activities that can be used in the classroom. A general overview is given of migration and the annual cycle.

Observe monarch butterflies and report their sightings online. Share and review the sightings with other students/classrooms to track hemispheric migratory patterns.

Track tulip growth as the season changes from winter to spring. See how temperature, rainfall, and sunshine affect growth and help scientists look for patterns of climate change.

Observe various migratory species (hummingbirds, butterflies, etc.) and report their sightings online. Share and review the sightings with other students/classrooms to track hemispheric migratory patterns.

Impressive animated slideshow presentation on the sun's daily cycle and how the sunlight changes hour by hour over the course of a day. Includes a teacher guide with lesson plan ideas and activities.

Questions and answers that touch on all the essentials about bald eagles (anatomy, reproduction and young, diet and feeding behaviors, migration and flight, habitat and range, and conservation).

A very informative article that answers questions related to characteristics of the humpback whale plus life cycle, ecology, behavioral adaptations and conservation. The migratory patterns of this whale are also tracked.

A comprehensive article that answers a number of questions about the right whale. Questions deal with characteristics, life cycle, ecology and conservation. This site also contains lessons and activities that can be used in the...

A comprehensive resource that contains facts about caribou, challenge questions, lessons, activities and migration information. The migration pattern of the caribou is also tracked.