In this animated activity, learners explore three major methods of heat transfer and practice identifying each.

In this well-illustrated activity, learners examine the three types of intermolecular forces: dipole-dipole forces, London or Van der Waals forces, and the hydrogen bond. Two interactive questions are included.

Students review the Voltage Divider Rule and work practice problems.

Learners follow a methodical approach for the dc analysis of series-parallel circuits.

The superposition theorem is explained as it relates to dc circuit analysis. Examples are given.

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.

Learners examine the operation of a DC Shunt motor and its characteristics. A quiz completes the activity.

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

In this animated activity, learners view the seven steps that are used to calculate voltage and current values throughout a common-emitter transistor amplifier.

Learners follow the steps for reducing all of the elements of a complex circuit to a single current source and a single source resistance to create a simple circuit. Several examples are given for dc circuits. The conversion between Thevenin and Norton is also presented.

In this interactive object, learners follow steps to find phase voltages in a partial three-phase power distribution circuit.

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

The learner views the operation of a transistor switching from saturation to cutoff. A brief quiz completes the activity.

In this interactive object, instructors use an extensive inventory to assess their beliefs and uses of assessment. The inventory is based on the work of educators supported by the American Association of Higher Education Assessment Forum in 1996.

In this learning activity you'll identify abbreviations that represent quantities associated with electrical circuits.

In this animated object, learners examine the design of a ladder circuit that provides manual control to a water pumping system. Students also study modifications to the circuit as the complexity of the system increases.

Learners read about the types of clothing considered appropriate for a childcare setting. This activity is designed for students enrolled in an early childhood education program.

In this drag-and-drop exercise, learners review the names of diagnostic tests and match them with their descriptions and the nursing actions that relate to them.

Students follow the steps that are required to select a transformer with the proper ratings. Voltage, frequency, current, and KVA are considered.

Learners read how nanotechnology is creating new jobs in emerging industries while making others obsolete. This colorful and animated activity also looks at the types of products being created through the use of technology and how educational institutions have responded.