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Radioactive Decay Model
The EJS Radioactive Decay Model simulates the decay of a radioactive sample using discrete random events. It displays the number of radioactive nuclei as a function of time. You can change the initial number of nuclei and the decay constant as well as changing the plot to a semi-log plot.
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Lennard-Jones Potential Model
The EJS Lennard-Jones Potential model shows the dynamics of a particle of mass m within this potential. You can drag particle to change its position and you can drag the energy-line to change its total energy. The Lennard-Jones potential function is a reasonably accurate model of interactions between noble gas atoms.  The binding energy epsilon is the depth of the potential well and minimum molecular separation are set equal to unity.  This simulation uses uses a natural system of units the m
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Unit 2 - Participatory facilitation for household food security
Unit 2 is dedicated to the facilitation process and skills to help you facilitate HFS projects well. In this unit we will look at participatory and facilitation techniques in relation to Household Food Security. We will examine he background and history of community development and the difference between the approaches that developed. We will describe the community development approach we will be using for the Household Food Security Programme with its content modules based on household food se
Author(s): Ms Thembi Ngcobo

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Bering Sea Climate
The Bering Sea Climate website contains time series data that measures climate and ecosystem status in the Bering Sea. The site presents data, metadata, and graphics by allowing the user to select categories and then click a button for the desired function. Data can be displayed as a list, a time series plot, or in terms of recent trends, relevance, and correlation. Measured parameters include weather, oceanographic and climate data, sea ice data, and fisheries and other biological data. The sit
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2009 National Hydrologic Assessment
This site from the Hydrologic Information Center of the National Weather Service discusses the flood risk in the United States. Maps and satellite images support the text. The site also provides information about snow levels, stream flow, soil conditions, forecasts and outlooks.
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Stellar Wind Disruption by an Orbiting Neutron Star: High X-Ray Luminosity
A tiny neutron star orbits incessantly around a massive star with a diameter a million times larger than its own. The high luminosity of the massive star drives a strong wind from its surface. The neutron star crashes through this wind at over 300 kilometers per second. The gravity and X-ray luminosity of the neutron star act to disrupt the wind, producing an extended wake of dense gas trailing behind the neutron star. This simulation, in the reference frame of the neutron star, shows conditions
Author(s): Alan McConnell,Bruce Fryxell,Ian Stevens,John Blon

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Stellar Wind Disruption by an Orbiting Neutron Star: Low X-Ray Luminosity
A tiny neutron star orbits incessantly around a massive star with a diameter a million times larger than its own. The high luminosity of the massive star drives a strong wind from its surface. The neutron star crashes through this wind at over 300 kilometers per second. The gravity and X-ray luminosity of the neutron star act to disrupt the wind, producing an extended wake of dense gas trailing behind the neutron star. This simulation, in the reference frame of the neutron star, shows conditions
Author(s): Alan McConnell,Bruce Fryxell,Ian Stevens,John Blon

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Pacific Northwest Ecosystem Research Consortium
This page provides access to digital maps and supporting material used in developing future scenarios for the Willamette River Basin. The Existing Conditions Section contains digital maps in ArcInfo format organized into six categories called Theme Groups. These maps provide the starting point for development ...
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"Introduction to Neuroscience, Fall 2007"
" This course is an introduction to the mammalian nervous system, with emphasis on the structure and function of the human brain. Topics include the function of nerve cells, sensory systems, control of movement, learning and memory, and diseases of the brain."
Author(s): Bear, Mark,Seung, Sebastian

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Aerodynamics: applications of force and flow
Although there is a great deal of historical information about aerodynamics that could be discussed here, we purposely narrowed the stream of resources to those that encourage students to experiment with technological design and function.
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Math Literature Connections: Patterns and Algebra
Ideas and activities that use Two of Everything, One Grain of Rice and the King's Chessboard to introduce students to function machines and input/output tables.   Links to appropriate templates are also provided.
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Personal Preparedness Planning For Public Health Workers
Public health workers need to understand and implement basic concepts of personal preparedness planning so that they can function effectively as public health emergency responders in a post-9/11 world. These basic preparedness strategies can be applied to meet a broad range of public health emergency response challenges, including - but not limited to - acts of terrorism. Personal Preparedness Planning provides a practical introduction to these concepts that is tailored to the needs of public he
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The Cardiovascular System
After completion of this project, you will be able to: 1. Identify the components of blood 2. Describe the function of blood 3. Label a normal human heart. 4. Trace the flow of blood through the human body and the heart.
Author(s): Mrs. Hutchinson

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Arthritis (Spanish)
This patient education program explains certain arthritic conditions, including osteoarthritis and rheumatoid arthritis, and their treatment options. This resource is a MedlinePlus Interactive Health Tutorial from the National Library of Medicine, designed and developed by the Patient Education Institute.
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Kidney Stones (Spanish)
This patient education program discusses kidney stones including how they are formed, their symptoms, diagnosis, treatment options, and prevention. It also reviews the anatomy and function of the kidneys. This resource is a MedlinePlus Interactive Health Tutorial from the National Library of Medicine, ...
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Soil: The Great Decomposer
The purpose of this resource is to understand that soil, under different environmental conditions, plays a role in the decomposition of organic materials. Students use bottle experiments to observe changes in the decomposition of vegetable scraps. Students vary temperature, moisture, and light conditions to determine the conditions that best facilitate the decomposition of organic material in soil.
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Water Vapor Protocol
The purpose of this activity is to measure the total precipitable water vapor (column water vapor) in the atmosphere above an observer's site. Students point a GLOBE/GIFTS water vapor instrument at the sun and record the voltage readings from a digital voltmeter. They observe sky conditions near the Sun and perform the Cloud Protocols. Intended outcomes are that students understand the concept that the atmosphere prevents some of the sun's light from reaching Earth's surface, how water vapor mea
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Aerosols Protocol
The purpose of this activity is to measure the aerosol optical thickness of the atmosphere (how much of the sun's light is scattered or absorbed by particles suspended in the air). Students point a GLOBE sun photometer at the sun and record the largest voltage reading they obtain on a digital voltmeter connected to the photometer. Students observe sky conditions near the sun, perform the Cloud, Optional Barometric Pressure (optional) and Relative Humidity Protocols, and measure current air tempe
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Space Weather Research Explorer
looks at how the sun creates a changing set of conditions in space. Learn about coronal holes, solar flares, coronal mass ejections, solar wind, magnetosphere, and auroras. See photos, graphs, and live data. Make your own space weather predictions.
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Microscope Imaging Station
This site shows what blood is, what happens when the immune system goes awry, what are stem cells are, and more. See videos exploring cell structure and function, cell development and motility, plankton, plants, and protozoa. Learn how the sea urchin helps us understand genes, reproduction, and cancer.
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