This short video and interactive assessment activity is designed to teach third graders about classifying all types of triangles by lengths of sides.

This short video and interactive assessment activity is designed to teach third graders an overview of triangle classifications.

This short video and interactive assessment activity is designed to teach third graders about classifying triangles based on equal sides.

Students create a class composition of a thunderstorm by exploring expressive qualities of crescendo/decrescendo and accelerando/ritardando

Hydropower generation is introduced to students as a common purpose and benefit of constructing dams. Through an introduction to kinetic and potential energy, students come to understand how a dam creates electricity. They also learn the difference between renewable and non-renewable energy.

Students investigate decomposers and the role of decomposers in maintaining the flow of nutrients in an environment. Students also learn how engineers use decomposers to help clean up wastes in a process known as bioremediation. This lesson concludes a series of six lessons in which students use their growing understanding of various environments and the engineering design process, to design and create their own model biodome ecosystems.

Students learn about a special branch of engineering called bioremediation, which is the use of living organisms to aid in the clean-up of pollutant spills. Students learn all about bioremediation and see examples of its importance. In the associated activity, students conduct an experiment and see bioremediation in action!

How does climate change? And what happens to environments and ecosystems when it does? In this episode of Crash Course Kids, Sabrina shows us the effects that climate change can have and how one small change in an ecosystem can throw everything off.

In this self-paced tutorial, educators learn about the kinds of educational experiences that prove effective in exciting students about STEM careers and identify resources that can be used to introduce students to STEM careers, especially those related to climate change science. Profiles of scientists and engineers representing diverse populations are included for use in the classroom. Multimedia educational resources including video clips and vocabulary words linked to a glossary are included. This is the eighth of ten self-paced professional development modules providing opportunities for teachers to learn about climate change through first-hand data exploration.

These animated stories follow the adventures of a polar bear and a fish. In the two episodes here, one just over four minutes, the other just over five, the duo come face to face with worldwide environmental changes. This lesson is part of the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused on the science of climate change.

The brief introduction to El Ni̱o presented in this article also offers insights into its role during the quiet 2009 hurricane season. This article is part of the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused on the science of climate change.

In this career-oriented interview, readers are introduced to the manager of several farmer's markets in Portland, Oregon. Following a brief description of his job and the general operations of a farmer‰Ûªs market, he explains why these venues are beneficial to the vendors, the customers and the environment. The Climate Kids website is a NASA education resource featuring articles, videos, images and games focused on the science of climate change.

An interview conducted with a building contractor provides insights into what it means to build an environmentally "green" house. This lesson is part of the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused on the science of climate change.

This career-oriented interview features a home energy auditor. He describes his job responsibilities and offers tips for improving home energy efficiency. The Climate Kids website is a NASA education resource featuring articles, videos, images and games focused on the science of climate change.

This question is addressed through a series of questions and answers, each providing related introductory information such as how climate change is studied, the history of Earth‰Ûªs climate, and the effects of climate change on Earth‰Ûªs geology and biology. The Climate Kids website is a NASA education resource featuring articles, videos, images and games focused on the science of climate change.

Following a brief introduction to tidal energy, this article discusses the use of tidal generators to convert that energy into electricity. The article also features a description and images of the Invergordon, Scotland tidal energy generator. This lesson is part of the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused on the science of climate change.

The movement of Arctic air, known as the Arctic oscillation, can and will cause periodic extreme winter weather outside the Arctic region - the harsh winter experienced in many parts of the U.S. in 2010 is a recent example. This article explains the connection between the two events. This article is part of the Climate Kids website, a NASA education resource featuring articles, videos, images and games focused on the science of climate change.

This article discusses the challenges facing a species of lemur in Madagascar. Due to atypical rain patterns resulting from climate change, the survival rate of the offspring of these lemurs is decreasing. The Climate Kids website is a NASA education resource featuring articles, videos, images and games focused on the science of climate change.

The effects of climate change on marmots in Colorado and sheep in Scotland are presented and compared. The Climate Kids website is a NASA education resource featuring articles, videos, images and games focused on the science of climate change.