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169-192 of 1,860 results for Materials Submitted by Barbra Bied Sperling

This activity introduces students to planetary research. Students learn to focus on details by studying and writing... see more

This is an online game about the complexities of farming. Learners will "draw" cards and make decisions about how to take... see more

This DVD combines the latest scientific and educational research to help teachers in grades 8-12 deepen their own and... see more

This is an activity about waves. Using marbles, paper clips and rubber bands, learners explore how waves behave. This is... see more

This is a long-term inquiry activity in which students investigate locations they believe harbor cellulose-digesting... see more

The Biosphere 2 project of the early 1990s failed dramatically because the planners overlooked the metabolic activities... see more

The purpose of this resource is to quantitatively evaluate the accuracy of a classification system. Students sort birds... see more

In this classic activity, learners investigate natural selection by becoming birds foraging for food on an island. The... see more

In this activity, learners investigate different types of bird beaks using household items which mimic different beak... see more

Black carbon, composed of tiny particles of soot, is produced whenever organic substances like fossil fuels, firewood or... see more

In this lesson students investigate the effects of black carbon on arctic warming and are introduced to a mechanism of... see more

In this lesson students investigate the effects of black carbon on arctic warming and are introduced to a mechanism of... see more

This classroom demonstration employs a jar, milk and a flashlight as a model system to demonstrate that light maintains... see more

Students experiment with a model system made from a wooden block, sandpaper, a thumbtack, and a rubber band to understand... see more

A trade association that promotes the use of small hydropower. Members include industry equipment manufacturers, civil,... see more

In this activity, learners observe as soap bubbles float on a cushion of carbon dioxide gas. Learners blow bubbles into... see more

This is a virtual representation of a sound mixer containing pre-looped sounds of animal, insect, and environmental... see more

This interactive feature explains Darwin's theory of how low-lying coral islands called atolls form in tropical seas from... see more

Summary Buoyancy is based on Archimedes' Principle which states that the buoyant force acting upward on an object... see more

This set of animations and interactive simulations from the Byrd Polar Research Center at Ohio State University helps... see more

This set of animations and interactive simulations from the Byrd Polar Research Center at Ohio State University helps... see more

C-Learn is a simplified version of the C-ROADS simulator. Its primary purpose is to help users understand the long-term... see more

C-Learn is a simplified version of the C-ROADS simulator. Its primary purpose is to help users understand the long-term... see more

In this activity, students write an essay on the history of scientific discoveries in the field of dinosaur paleontology.... see more