Test the pH of everyday liquids such as coffee, spit, and soap to determine whether each is acidic, basic, or neutral. Investigate how adding more of a liquid or diluting with water affects pH.
Look inside a resistor to see how it works. Increase the battery voltage to make more electrons flow through the resistor. Increase the resistance to block the flow of electrons. Watch the current and resistor temperature change. Java required.
Take a look inside a battery and change the voltage to see what goes on inside. Read the voltmeter as little stick people move the charges from one end of the battery to the other.
Look inside a battery to see how it works. Select the battery voltage and little stick figures move charges from one end of the battery to the other. A voltmeter tells you the resulting battery voltage. Java required.
An interactive simulation that teaches about Beer's Law, solutions, concentration, spectrophotometry, and more through observations to explore how much light is absorbed and transmitted with changes in thickness and color. This simulation can either be downloaded or played online and includes handouts, lesson plans, and additional materials.
"The thicker the glass, the darker the brew, the less the light that passes through." Make colorful concentrated and dilute solutions and explore how much light they absorb and transmit using a virtual spectrophotometer!
Explore bending of light between two media with different indices of refraction. See how changing from air to water to glass changes the bending angle. Play with prisms of different shapes and make rainbows.
Manipulate variables and measure angles as light is refracted in this interactive simulation.
Watch beta decay occur for a collection of nuclei or for an individual nucleus.
An interactive simulation that teaches about blackbody, sun, light, and quantum mechanics. Students learn my making observations while changing the temperature with a sun, a light bulb, an oven, and the Earth in order to see the changes in wavelength and spectrum intensity. This simulation can either be downloaded or played online and includes handouts, lesson plans, and additional materials.
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.
Build fractions from shapes and numbers to earn stars in this fractions game or explore in the Fractions Lab.
Interactive fractions game explores equivalent fractions and comparing fractions using numbers and patterns.
Starting from atoms, see how many molecules you can build. Collect your molecules and see them in 3D.
Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!
An interactive simulation that teaches about buoyancy and density by applying various forces and modifying the properties of objects and fluids. This simulation can either be downloaded or played online and includes handouts, lesson plans, and additional materials.
Draw a graph of any function and see graphs of its derivative and integral. Don't forget to use the magnify/demagnify controls on the y-axis to adjust the scale.
Draw a graph of any function and see graphs of its derivative and integral. Don't forget to use the magnify/demagnify controls on the y-axis to adjust the scale.
Explore how a capacitor works! Change the size of the plates and add a dielectric to see how it affects capacitance. Change the voltage and see charges built up on the plates. Shows the electric field in the capacitor. Measure voltage and electric field. Java required.
Arrange positive and negative charges in space and view the resulting electric field and electrostatic potential. Plot equipotential lines and discover their relationship to the electric field. Create models of dipoles, capacitors, and more.