Browse Resources

The PhET project at the University of Colorado creates "fun, interactive, research-based simulations of physical phenomena." This particular simulation deals with Beer's Law: "The thicker the glass, the darker the brew, the less the light that passes through." Make colorful concentrated and dilute...

This video recording, from Excelsior College, takes users through a blueprint simulation. The simulation involves "an electrician troubleshoot[ing] a defective compressor motor that will not start." Appropriate blueprints are selected "that must be referred to while performing the troubleshooting...

This video recording, from Excelsior College, takes users through a blueprint simulation. The simulation involves "an electrician troubleshoot[ing] a defective water pump that will not start." Appropriate blueprints are selected "that must be referred to while performing the troubleshooting steps."...

This site includes an interactive Java applet for control systems. Users may drag open-loop corner frequencies with the mouse to improve tracking performance and reject sensor noise in a unity-feedback system.

This website includes a Java applet that displays the effect that various operations on an N-periodic, discrete-time signal (e.g. time shift, time scale, filtering) have on the signal and its spectra. Sketch the signal or magnitude and phase spectra with the mouse, and then select the operation.

This collection from Excelsior College includes video recordings that take users through three electrical personal protective equipment (PPE) simulations. The first simulation is a situation that involves "a pump powered by a single-phase 230 volts [that] has ceased operating." The second simulation ...

This resource provides an introductory activity on electrons in atoms and molecules. Core concepts include the formation of atoms, chemical bonding, chemical polarity and atoms in electric fields. The interactive module allows students to test their knowledge as they learn. The material would be...

This webpage includes an animation of a formation of a PN Junction Diode and its Band Diagram. This interactive applet is a good way to help students see the relationship.

This site includes a Java applet that displays Fourier series approximations and corresponding magnitude and phase spectra of a periodic continuous-time signal. Select from provided signals, or draw a signal with the mouse.

The PhET project at the University of Colorado creates "fun, interactive, research-based simulations of physical phenomena." This particular one deals with the lac operon. Build a gene network! The lac operon is a set of genes which are responsible for the metabolism of lactose in some bacterial...