Learners examine how melting, vaporization, and sublimation require energy input while freezing and condensation release energy.

Students view schematics and truth tables that demonstrate how the AND, OR, and Hex Inverter functions are achieved through the use of only NAND gates.

Students read about how to make the plural form of nouns that end with "f" or "fe." They then complete an exercise.

You'll be introduced to the Go-Back-N ARQ, learn what it is, and find out how it's used to keep track of data sent between networked computers.

In this animated activity, learners practice listening and counting the apical pulse of adults, children, and infants.

The learner will gain an understanding of the inner workings of the cycloidal gear drive while watching a video and listening to an explanation of its features.

Compare the behaviors and situations that interfere with effective communication in the workplace with those that enhance listening skills and career performance.

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

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.

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

Learners practice their communication skills in this scenario by reading a map, listening to traffic reports, and writing directions for a new delivery route. This activity has audio content.

The learner listens to the pronunciation of medical terms using a "jukebox" to select the terms.

In this screencast, students read about the seven types of intelligence identified by psychologist Dr. Howard Gardner. They then review the type(s) of intelligence of each character in the Land of Oz.

In this simulation activity, an electrician will troubleshoot an AC motor that quit running and cannot be restarted. Before accessing blueprints and then using a multimeter to find the fault, the learner will follow safety protocols by following lock-out tag-out procedures and then suit up with appropriate (PPE) personal protection equipment.

The student sees a list of 30 of the most often misspelled words used in business. In one exercise, the student listens to each word and then keys in the spelling of that word. In the next exercise, the student matches synonyms.