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Blackbody Spectrum
How does the blackbody spectrum of the sun compare to visible light? Learn about the blackbody spectrum of the sun, a light bulb, an oven, and the earth. Adjust the temperature to see the wavelength and intensity of the spectrum change. View the color of the peak of the spectral curve.
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Color Vision and Filters
Make a whole rainbow by mixing red, green, and blue light. Change the wavelength of a monochromatic beam or filter white light. View the light as a solid beam, or see the individual photons.
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Gas Properties
Pump gas molecules to a box and see what happens as you change the volume, add or remove heat, change gravity, and more. Measure the temperature and pressure, and discover how the properties of the gas vary in relation to each other.
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Ohm's Law
See how the equation form of Ohm's law relates to a simple circuit. Adjust the voltage and resistance, and see the current change according to Ohm's law. The sizes of the symbols in the equation change to match the circuit diagram.
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Quantum Wave Interference
When do photons, electrons, and atoms behave like particles and when do they behave like waves? Watch waves spread out and interfere as they pass through a double slit, then get detected on a screen as tiny dots. Use quantum detectors to explore how measurements change the waves and the patterns they ...
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Resistance in a Wire
Learn about the physics of resistance in a wire. Change its resistivity, length, and area to see how they affect the wire's resistance. The sizes of the symbols in the equation change along with the diagram of a wire.
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Semiconductors
Dope the semiconductor to create a diode or transistor. Watch the electrons change position and energy.
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The Greenhouse Effect
Just how do greenhouse gases change the climate? Select the level of atmospheric greenhouse gases during an ice age, in the year 1750, today, or some time in the future and see how the Earth's temperature changes. Add clouds or panes of glass.
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Vector Addition
Learn how to add vectors. Drag vectors onto a graph, change their length and angle, and sum them together. The magnitude, angle, and components of each vector can be displayed in several formats.
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States of Matter
Watch different types of molecules form a solid, liquid, or gas. Add or remove heat and watch the phase change. Change the temperature or volume of a container and see a pressure-temperature diagram respond in real time. Relate the interaction potential to the forces between molecules.
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Ladybug Revolution
Join the ladybug in an exploration of rotational motion. Rotate the merry-go-round to change its angle, or choose a constant angular velocity or angular acceleration. Explore how circular motion relates to the bug's x,y position, velocity, and acceleration using vectors or graphs.
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Climate and Water in Ghana
shows the dramatic contrast between the rainy and dry seasons in West Africa and helps students define and identify the features of climate. They apply this knowledge to the study of how climate affects people and the environment.
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Creating People Centred Schools: Section Two, School organization: a brief history
This provides an overview of organizational styles and the importance of cultures as well as structures in organizational models and change.
Author(s): Themba Ndhlovu, Carol Bertram, Nonhlanhla Mthiyane

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Natural Inquirer Climate Change Series: Balancing Act
The Natural Inquirer Climate Change series article Balancing Act explores the relationship between urban trees and the carbon cycle.
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Natural Inquirer Climate Change Series: Gas
The Natural Inquirer Climate Change series article It's a Gas explores the exchange of gases between the soil and atmosphere in tropical forests.
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The Next Evolution of Man
This amateur video is about evolution as a gradual change to a more complex and better society. The narrator talks about "mind awareness" and "foster presence and stillness in life." This is a scholarly philosophical narration. Mr. Scott discusses the oneness of the world.

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Machining Parameters: Grinding
Through this simulation, students can change the parameters of a grinding wheel and explore the effects of those changes.
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Machining Parameters: Turning Process
Through this simulation, students can change the parameters of a turning wheel and explore the effects of those changes.
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Predicting the Greening of Spring with Red Emperor Tulips
As the earth revolves around the sun in its annual cycle we experience seasonal change. Where will spring arrive first? What kind of patterns will we see as the wave of spring progresses? Start in the fall to think about these questions, and make some predictions. Then in the spring revisit your predictions with each Journey North news update and real-time map.
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Global Climates and Seasons. A Look at Temperature and Precipitation
Several factors affect a region's climate and the number and types of seasons it experiences. Here students explore colorful animations of annual changes in temperature and precipitation.
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