An online brain dominance inventory provides students with information on their brain dominance and information processing style. This relates to perception and learning styles.

This video segment adapted from Interactive NOVA profiles two scientists who were surprised in 1984 to discover a hole in our atmosphere's ozone layer as big as the United States.

The professor sells an announced number of M&M packets (or other inexpensive good) through an auction to derive a classroom demand schedule. The resulting demand schedule is displayed as a "curve" and facilitates discussion of consumer demand.

This video segment, adapted from NOVA, explores reasons why Homo sapiens had an advantage over Neanderthals in the pursuit of territory and natural resources.

This article reprints and links to informational text about the art and science of igloos. Versions are available for students in grades K-1, 2-3 and 4-5. Related science and literacy activities are included.

In this video segment adapted from NOVA, dramatic footage of avalanches and animations of ice crystals illustrate how a layer of weakly-bonded snow can contribute to a devastating avalanche.

In this video segment adapted from NOVA, scientists use computer simulations to explore the question of how supercell thunderstorms produce tornadoes.

Spreadsheets Across the Curriculum module. Students use Polya's problem-solving heuristic to find the distance of a peak using vertical angles sighted from a wagon train heading toward the peak.

Use an astrolabe to measure the height of objects, and see seasonal changes over time.

This video segment adapted from KET's Where the River Bends demonstrates how climate change and glacier movement during the Ice Ages destroyed the old Teays River and created the Ohio River, Kentucky's northern border.

In this activity, to learn about the biological needs of mosses, students will grow and maintain their own moss terrarium. Through daily maintenance and observation, students will identify those factors necessary for the successful cultivation of moss.

This film chronicles the introduction of the hula hoop, a toy that set off one of the greatest fads in United States history. According to Wham-O, the manufacturer of the hoop, when the toy was first introduced in the late 1950s, over 25 million were sold in four months. This short scene illustrates the difference between a movement along a demand curve and a shift of the entire curve, a subtle point that many students struggle with.

In this video segment adapted from NOVA: Judgment Day: Intelligent Design on Trial, learn how modern genetics and molecular biology offer compelling support for evolution. The video features an interview with biologist Ken Miller.

This article examines the sixth of seven essential principles of the climate sciences--"We Change Earth's Climate." Written for the science teacher, the article covers greenhouse gases, land-use changes, and other human-induced causes of global climate change. Each issue of the free online magazine Beyond Weather and the Water Cycle is structured around one of the seven principles. The content provides background information, lessons, and activities for K-5 classrooms.

Map of Africa coded by the number of underweight children per square kilometer. It is thus a measure of the absolute density of hungry individuals, a combination of hunger and population density.

In this video segment adapted from the National Film Board of Canada, learn how the Inuit people have used their traditional knowledge to understand and adapt to changes in their Arctic environment, particularly when hunting and navigating the landscape.

This issue of the free online magazine, Beyond Penguins and Polar Bears, contains content knowledge and instructional resources about icebergs and glaciers and the scientific principles of density and buoyancy.

This article assembles free resources from the Icebergs and Glaciers issue of the Beyond Penguins and Polar Bears cyberzine into a unit outline based on the 5E learning cycle framework. Outlines are provided for Grades K-2 and 3-5.

This activity is designed for students to discover how making observations of the environment is the key to making sound predictions. Students will also learn how both positive and negative outcomes of these predictions can affect and shape future decisions.

This article discusses the research-based strategy of identifying similarities and differences and provides links to web sites to develop teacher's content knowledge.