What is a solar eclipse and why are they only visible in some parts of the world? In this video segment adapted from NASA, astronomer Susan Stolovy uses animations to provide an answer to these questions.

In this video segment adapted from ZOOM, cast members assemble a solar still and make fresh water from saltwater, demonstrating two steps of the water cycle, evaporation and condensation.

Use logic to solve visual, interactive mathematical puzzles. Create your own puzzles to share with your friends or the SolveMe Community.

Permitted Use: free online - not under an open license

This interactive quiz from the NOVA Web site features an array of interesting facts about the nature of sound underwater.

This video segment, adapted from ZOOM, explores how sound waves travel differently through solids than through air, in this case, a metal clothes hanger.

This video segment adapted from Shedding Light on Science uses historical illustrations and everyday examples to show that light has a speed and does not travel instantaneously.

In this video adapted from the University of Alaska, Anchorage, Alaska Native people of Chevak teach visitors about the beauty of Cup'ik culture and the spirit of the earth, sea, and animals.

In this video profile produced for Teachers' Domain, meet conservationist Steve MacLean, an Inupiaq from Barrow, Alaska, who works to preserve the health of the Bering Sea ecosystem.

In this activity, you'll make an electric motor--a simple version of the electric motors found in toys, tools, and appliances everywhere. The activity includes three short online videos: Introduction, Step-by-Step Instructions, and What's Going On. Also available: a concept map and a "Going Further" document that suggests variations on this activity.

Studying life on the seafloor beneath Antarctica's thick ice is a major challenge for ecologists. Learn about a new device that can reach those icy depths in this video segment adapted from WomenInAntarctica.com.

For teachers in K-Grade 5 classrooms, the author of this article reviews the reading comprehension strategies known as Summarizing and Synthesizing. She provides links to web sites and to a book that will provide more background information and lessons. The article appears in the free, online magazine Beyond Weather and the Water Cycle, which focuses on the seven essential principles of climate science.

This article provides elementary school teachers with background knowledge about science concepts needed to understand the first of seven essential principles of climate literacy--the sun is the primary source of energy for our climate system. Graphs, diagrams, and oneline resources provide more background for the teacher. The article appears in a free online magazine that focuses on the seven essential princples of the climate sciences.

This book list contains children's books that have been screened for accuracy in depicting scientific concepts. Each book's content is briefly described and its cover pictured. The topics of the books support learning in Grades K-5 about the issue's theme. The list appears in the free, online magazine Beyond Weather and the Water Cycle, which focuses on the essential principles of climate literacy.

Beginning with examples from the polar regions, this article examines the question Š—“Why do we have seasons?Š— Included are links to lesson plans, a list of childrenŠ—Čs books, and suggested alignments with science, literacy, geography, and climate instruction in K-5 classrooms. The article appears in the free, online magazine Beyond Penguins and Polar Bears.

This video segment from FRONTLINE/NOVA: "Harvest of Fear" explores genetic modification of salmon and possible consequences.

In this activity, learners use a chemical reaction to visualize where moisture forms on the body. Learners use the Minor's iodine-starch test, a diagnostic test that doctors use to detect hyperhidrosis (excessive sweating), to identify where moisture is forming. Learners also use this method to test the effectiveness of different antiperspirants.

This video segment adapted from NOVA reveals how junk DNA helped solve an evolutionary mystery: Why do certain species of fruit flies have wing spots while others don't?

This regular column, called Take Action, in the magazine Beyond Weather and the Water Cycle suggests actions K-5 teachers can take to incorporate the guiding principle for informed climate decisions in the classroom. The principle, which appears in the document Climate Literacy, states that humans can take actions to reduce climate change and its impacts.

The Take Action column in the free, online magazine Beyond Weather and the Water Cycle suggests actions young people (K-grade 5) can take to reduce the impacts of climate change. The magazine examines the recognized essential principles of climate literacy and the climate sciences as well as the guiding principle for informed climate decisions.

The Take Action column provides resources that help teachers engage students in activities that connect their science learning to their lives. In this article, students are introduced to household appliances and devices, called energy vampires, that continue to draw electrical current even when turned off. The article offers a few simple activities that students can take to reduce the impact of energy vampires. The Take Action column regularly appears in the free, online magazine Beyond Weather and the Water Cycle, which focuses on the essential principles of climate literacy.