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169-192 of 2,361 results for Materials Submitted by Barbra Bied Sperling

In this activity, learners construct a coastal landmass from sand and add features such as tidal creeks and barrier... see more

In this two-part activity, learners use everyday materials to visualize one mole of gas or 22.4 liters of gas. The first... see more

In this quick and easy activity and/or demonstration, learners illustrate the effect of the weight of air over our heads.... see more

This demonstration is designed to show how the inputs and outputs of energy or mass in a system balance. Students create... see more

In this activity, students create a reservoir model using hoses, a bucket, a flat pan, and water, to understand the... see more

In this activity, students investigate the interacting parts of the Earth system by observing changes in evaporation rate... see more

In this activity about the human heart (on page 5 of the PDF), learners work in teams to simulate the volume of blood... see more

This 5-minute animation portrays fluctuations in the cryosphere through observations collected from a variety of... see more

This virtual tour utilizes the geographic interactive software Google Earth to explain the scientific, engineering, and... see more

3D interactive model of abietic_acid C__H__O_ for demonstrating molecular geometry, vibrations, symmetry and orbitals.

Esta animaci�_n muestra c�_mo se absorben los herbicidas por las ra�_ces, e ilustra la ruta que sigue el herbicida... see more

This web site examines the chemistry and biology of cooking. The site's sections highlight the science involved in... see more

3D interactive model of acenaphthene C__H__ for demonstrating molecular geometry, vibrations, symmetry and orbitals.

3D interactive model of acenaphthenequinone C__H_O_ for demonstrating molecular geometry, vibrations, symmetry and... see more

3D interactive model of acenaphthylene C__H_ for demonstrating molecular geometry, vibrations, symmetry and orbitals.

3D interactive model of acepromazine C__H__N_OS for demonstrating molecular geometry, vibrations, symmetry and orbitals.

3D interactive model of acetaldehyde C_H_O for demonstrating molecular geometry, vibrations, symmetry and orbitals.

3D interactive model of acetamide C_H_NO for demonstrating molecular geometry, vibrations, symmetry and orbitals.

3D interactive model of Acetic Acid CH_COOH for demonstrating molecular geometry, vibrations, symmetry and orbitals.

3D interactive model of acetone C_H_O for demonstrating molecular geometry, vibrations, symmetry and orbitals.

3D interactive model of acetonitrile C_H_N for demonstrating molecular geometry, vibrations, symmetry and orbitals.

In this outdoor game, learners play the roles of gray or red squirrels gathering and storing a supply of food in "fall"... see more

3D interactive model of acridine C__H_N for demonstrating molecular geometry, vibrations, symmetry and orbitals.

One of the bellwether species on the impact of climate change to our environment is the butterfly. Scientists say that... see more