In this interactive and animated object, learners examine the flow of electron current into and out of hot and neutral sockets during each alternation of an AC waveform. A brief quiz completes the activity.

In this animated lesson, students read an analogy comparing water in a "special" water tank to the current "flow" through a capacitor.

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.

Learners work problems to make conversions between RMS, average, peak, and peak-to-peak AC voltages.

In this interactive object, the learner matches various disorders to the acid-base disturbances they cause.

Students read different definitions of "acids" and "bases." In an interactive exercise, they identify if a substance is an acid or a base.

Learners reinforce the matching concept in accrual basis accounting through a drag-and-drop exercise.

Students read about how acid/base balance affects a person's health. This activity includes animation.

Learners view several movie clips that demonstrate the use of an indicator to follow the neutralization reaction that occurs when an acid and a base are mixed. Students test their knowledge in a series of questions. Immediate feedback is given.

In this learning activity we will learn what access modifiers are and how they are used in C#.

Learners view video clips demonstrating acid-fast staining procedures. Correctly stained slides are shown. The learning object includes two matching exercises.

In this learning activity you'll discover the disconnected nature of the HTTP request-response model including some methods of persisting state and the security implications.

Learners will understand the technical terms used in the context of the SDS to help them interpret its information.

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.

Learners view the operation of an NPN transistor in the active region.

Students read and test themselves on the conditions that cause specific acid/base imbalances.

Learners read about the different kinds of positions available in the accounting field at private corporations, government agencies, and not-for-profit organizations.

Learners read about the purposes of balance sheets and income statements and then place accounts into these two financial statement categories in a drag-and-drop exercise.

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

Students view the mathematical expression of an AC waveform with respect to time (t) and read about the different components of this expression.