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.

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 read the dimensions of the different types of vehicles typically considered in highway design.

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

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

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 interpret phone messages to create a fax or a memo.

In this interactive exercise, learners review definitions of 26 terms and then test their knowledge in a matching exercise. Only six terms are included in the quiz; however, if the learner clicks “Restart,” more terms appear in random order.

The learner watches and listens to an animated scenario of a mother and daughter preparing dumplings for dinner. The dialogue is in Mandarin Chinese, and an English translation appears on the screen. Extra vocabulary words related to food preparation are also presented.

This interactive study guide will help students to identify recommended processes for enforcing rules on a work team.

Students follow step-by-step directions for entering data into a spreadsheet and reporting the results.

Learners examine eight different kinds of faulty logic or perception that interfere with critical thinking. They are superstition, ignorance, clustering illusion, false analogies, gambler’s fallacy, irrelevant comparisons, post hoc fallacy, and slippery slope fallacy. In an interactive exercise, learners identify ways to overcome these barriers.

The learner will understand proper safe handling and installation procedures for shielding gas cylinders.

The learner practices Mandarin Chinese in this animated scenario at a fast food counter.

Students read how to determine and calculate the dry density for a given sample of soil or aggregate based on the mass-volume relationship.

Learners read about the six levels of the psychomotor domain taxonomy and quiz themselves on a basic understanding of the content.

The learner reads directions for finding the slope, intercept, and correlation coefficient for a group of ordered pairs using one of eight different scientific calculators.

In this document you'll review drill grinding procedures and web thinning diagrams.

This learning object teaches the student German vocabulary for common items found in a virtual classroom.

In this animated activity, learners read and listen to a dialogue in Mandarin Chinese in a grocery store setting. The learner can then click on photos of fruits and vegetables to hear their pronunciation in Mandarin.