In this animated object, students view an explanation of how current, voltage, and the magnetic field strength of a series RL circuit change during five time constants. A brief quiz completes the activity.

Students take a 13-question quiz to practice reading 25- and 50-division Vernier height gages.

In this scenario, learners put themselves in the place of a safety director at a local company. They watch video of an injury-causing incident and propose changes to company policies and procedures to try to maintain a safe environment.

Learners study the interaction between the conductors of the stator and the armature inside a DC motor, which causes the shaft to rotate. A short quiz completes the activity.

Students read how to determine the total impedance of a parallel circuit using complex numbers. The "J" term is used in the calculations.

Students solve six problems for series impedance using complex numbers. Immediate feedback is given.

Students work six practice problems to determine the total impedance of a parallel circuit.

Students follow the steps for finding the total impedance for a series-parallel circuit. Several examples are given.

Students solve five problems to determine the total impedance of a series-parallel circuit. Immediate feedback is given.

Digital Divide - Internet and Net Geners of the Net generation.

Basic Internet concepts for kids

Test your knowledge of multimedia acronyms commonly used in the computer industry.