In this learning activity, you'll watch an animated explanation of the terms class and object as used by computer programmers, and then contrast the differences.

In this animated object, students view an explanation of how current, voltage, and the charge on a capacitor of a series RC circuit change during five time constants. A short quiz completes the activity.

Students read an explanation of chemical formulas in this animated activity. A quiz completes the object.

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.

In this animated object, learners examine the operation of a summing operational amplifier through formulas, tables, and animated illustrations. A brief quiz completes the activity.

Learners view an animated explanation of why an adjustment of the output voltage by an AC drive is required to maintain a constant torque as the frequency is varied.

In this animated activity, learners read an explanation of the four different modalities (currents) used in electrotherapy.

In this animated object, learners examine the PDF (portable document format), which has become the standard file format in the printing industry for the distribution of printable documents.

In this animated object, learners view the keystrokes on a TI-30XIIS calculator that are required to solve for the instantaneous voltage of a discharging RC circuit.

In this animated object, learners examine the different phases of a cell's life.

In this animated activity, learners examine the circuitry in a DC variable speed drive that causes the motor to accelerate or decelerate at slow rates. This learning object has audio content.

In this animated activity, learners examine the components of the dental x-ray tube and how dental x-rays are generated.

In this screencast, learners read an explanation of the file rules and indexing that have been developed by the Association of Records Managers and Administrators.

In this animated activity, students read about the two general types of variable resistors: potentiometers and rheostats. A brief quiz completes the learning object.

Learners observe the animated operation of an astable mulivibrator using a 555 IC (integrated circuit) chip and external components.

In this animated activity, learners view how to clear and preset a flip-flop to store a logic 0 or a logic 1.

In this animated object, learners view the operation of an open-collector inverter with and without a pull-up resistor.

In this animated object, learners use a TI-36X calculator to determine forces.

This animated lesson shows how to calculate the amount of force generated by hydraulic cylinders.

Learners study an animated PLC counting operation and examine how the count is automatically reset.