In this interactive object, students calculate inductive reactance, impedance, current, and power in parallel RL circuits.

In this animated object, learners examine how the heating or cooling steps in a manufacturing process work to control a chemical reaction.

The current-to-voltage conversion of the transresistance amplifier is examined. The formulas for output voltage and impedance are defined and an example ties the concepts together.

Learners apply the principles associated with Boyle’s Law.

In this animated object, learners examine the formulas used to convert peak, RMS, average, and peak-to-peak AC voltages. A brief quiz completes the activity.

In this interactive object, students work parallel circuit analysis problems. They solve for total resistance and current, the current through each resistor, the voltage across each resistor, and the power dissipated.

Learners review a graphic summary of the three series of reactions that occur during cellular respiration and the net energy (ATP) yield of that process.

In this animated object, students examine the concept of wattage dissipation and the three Watt's Law formulas.

In this learning activity you'll read a police investigation report and click on correct report entries in parentheses.

Users examine ways for students to give feedback to their instructor about what they have learned and what part of the lesson is not clear.

In this interactive object, learners sort veterinary cardiovascular system drugs into categories.

Learners alter circuit variables and view how these changes affect circuit voltage, current, reactance, impedance, and phase angle.

Learners examine the elements of a data file memory of an Allen-Bradley SLC-500 programmable controller. A quiz completes the activity.

Learners view waveforms at various locations of an SCR circuit controlling the intensity a light bulb. The waveforms are shown when the light is dim, at medium brightness, and at full brightness. A brief quiz completes the activity.

In this interactive and animated object, learners examine the duty cycle of a squarewave produced by a multivibrator using a 555 IC (integrated circuit). A brief quiz completes the activity.

In this learning activity you'll examine how routers transfer data between local area networks and the Internet.

The learner will gain an understanding of the inner workings of the cycloidal gear drive while watching a video and listening to an explanation of its features.

In this screencast, learners read descriptions of the actions of the superficial skeletal muscles and see their locations.

Learners examine the information on a title block and answer questions about that information in an interactive quiz.

In this screencast, we'll view the 10 major bones of the skull and read a description of each bone.

Learners test their ability to visualize a three-step block in this interactive exercise that features animated pictorial views.

The learner will understand how to correctly wire a three-wire sinking and sourcing sensor.

In this activity you'll identify several hazards in a welding environment.

Learners read the definitions of working capital, current ratio, quick ratio, return on equity, accounts receivable turnover, and inventory turnover.

Learners examine the relationship of voltage, current, and resistance as it applies to vehicle electrical systems.