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145-168 of 1,860 results for Materials Submitted by Barbra Bied Sperling

This mineral database, fro Pierre Perroud of the University of Geneva, contains mineral lists, mineral pictures, and... see more

This interactive exposes students to Earth's atmospheric gases of oxygen, carbon dioxide, and ozone. As the user... see more

The numerical methods, formulation and parameterizations used in models of the circulation of the atmosphere and ocean... see more

The numerical methods, formulation and parameterizations used in models of the circulation of the atmosphere and ocean... see more

The numerical methods, formulation and parameterizations used in models of the circulation of the atmosphere and ocean... see more

In this activity/demonstration, learners observe what happens when two ping pong balls are suspended in the air by a hair... see more

A large collection of solar images and information. Includes an illustration and explanation of the refraction of light... see more

This set of homework problems is intended to help students begin to discover the importance and utility of conservation... see more

This is a lesson about the mathematics of auroras. Learners will be exposed to the mathematical formulas that are used to... see more

In this geology activity, learners create a model using a mixture of salt and sand inside a CD case. When the case is... see more

This video and companion website explain the mechanics of an avalanche and how scientists are attempting to learning more... see more

The Aviation Digital Data Service (ADDS) makes available to the aviation community digital and graphical analyses,... see more

This is an activity about the adaptations that allow the Aye-aye to survive in its habitat. Learners will explore how the... see more

In this physics activity (page 3 of the PDF), learners will see firsthand that air takes up space and has pressure by... see more

In this activity about phase change and condensation, learners boil water in an empty pop bottle in the microwave. Then,... see more

In this demonstration, learners observe the effects of density and pressure by attempting to make "balloon kebabs."... see more

Hosted by Arizona State University, this site contains balloon photographs taken from above the Apache Junction. A series... see more

This physical science activity was designed to engage students in thinking about the scientific principles involved in a... see more

This site, produced by the University of the West of England, Bristol, contains undergraduate level interactive resource... see more

In any solar system, planets move in orbits around a star, bound to it by gravitation. Orbital paths are elliptical in... see more

In this outdoor biology and math activity, learners estimate the size of a population of organisms too numerous to count.... see more

This lesson guide includes six simple and quick activities to help learners better understand Bernoulli's Principle. The... see more

In this quick activity (page 1 of PDF), learners will witness firsthand the effects of Bernoulli��_s Principle by... see more

This collection of images, movies, and animations from NASA's Solar and Heliospheric Observatory (SOHO) features a large... see more