In this animated object, learners study how the internal parts of an AC synchronous motor interact with magnetic fields to cause rotation. A short quiz completes the activity.

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.

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

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.

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

The learner will...review the process for successfully completing a weld procedure specification for weld testing in the educational setting.

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

In this interactive object, learners examine terminology dealing with phonics and whole language and identify the different types of activities that would be seen in a phonics-based or whole language classroom. Part of this activity has audio.

Be the force to create a safer agricultural community by creating and presenting effective educational presentations. By informing others about biosecurity strategies, you’ll become a biosecurity advocate as you spread the word about its importance!

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.

In this animated object, learners examine how the rotation of an induction AC motor's armature slips behind the synchronous rotational speed of the stator's field to create magnetic fields. These fields interact and produce torque. A quiz completes the activity.

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

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

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

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.

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.