Learners examine the circuitry in a DC variable speed drive that prevents the motor from running at 0 rpm or at maximum speed under certain conditions.

In this animated object, learners read the dimensions of the different types of vehicles typically considered in highway design.

Learners identify the advantages and disadvantages of four versions of high speed Ethernet. A short quiz completes the activity.

In this animated and interactive object, the learner designs a treatment plan that includes precautions and adaptive equipment.

Learners watch a short video showing the correct procedure for police officers to follow when making contact with a high-risk vehicle.

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

In this learning activity you'll define and explain the broad steps in achieving quality in an organization.

Students read about the concept of unit weight relating to the 3-phase diagram and perform calculations.

In this interactive object, learners follow six steps for analyzing a process in a manufacturing setting. This activity includes a drag-and-drop exercise and textboxes where learners post their ideas.

In this animated activity, the learner listens to a dialogue in which a caller speaks with a receptionist to make a doctor’s appointment. The learner can then click on a number of medical terms to hear their pronunciation in Mandarin Chinese.

Learners view a demonstration showing that line-neutral voltages and line-line voltages are not in-phase with each other, but have a definite 30-degree relationship.

This video will demonstrate power tapping on a Bridgeport milling machine.

Learners examine the basic elements of a machine vision system. A short quiz completes the activity.

In this learning activity you'll examine how firewalls block viruses by discussing trusted, semi-trusted, and untrusted networks.

The learner listens to and sees the vocabulary words used when introducing family members.

In this animated activity, learners study how a PLC performs a shift operation. The learning object covers data movement, data entry, PLC wiring, PLC shift register introductions, and programming for a paint can operation.

In this document you'll review basic types of drilling machines.

Learners consider why an impedance matching transformer is needed to connect an antenna to a television.

The learner listens to and sees Chinese vocabulary words used to describe hobbies, sports, and other pastimes.

The learner reads a brief explanation of how to use Mandarin Chinese monetary terms in formal and colloquial speech. The learner can then click on a term to listen to its pronunciation and see its value.