Learners compare animations of analog and digital data signals. A short quiz completes the activity.

Learners follow steps to trace logic signals from the inputs of several interconnecting logic gates to one output.

In this animated activity, learners view the various hand, arm, and shoulder muscles in action. The students test their knowledge of the location of the muscles in a drag-and-drop exercise.

Learners examine animations of the most common transmission signals used in automated systems, such as 4 mA to 20 mA, 3 psi to 15 psi, and 0 to 10 volts. A brief quiz completes the activity.

In this learning activity you'll identify the voltage levels produced or recognized by digital logic devices as valid or invalid logic state signals.

In this quiz, you'll practice identifying hand tools by name.

In this quiz you'll identify common hand tools by their function.

Explore some common hand tools you’ll use both at home and at work.

Learners examine four stages of rheumatoid arthritis and compare them to the normal synovial joint.

The learner will recognize common gestures and identify the meanings associated with those gestures.

In this interactive and animated object, learners examine Midtronics hand-held battery and charging system testers and view the operation of these testers in an automotive repair facility.

In this animated activity, learners examine how an electronic converter changes digital signals to analog signals. Sections of a synthesizer are identified, and the operation of a D/A converter is demonstrated.

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

Students read about the greeting customs of people in different parts of the world and take a short quiz.

In this animated object, learners examine the signals produced at the N.O. (normally open) and N.C. (normally closed) outputs of sourcing and sinking four-wire sensors. A brief quiz completes the activity.

This project gives a drawing with steps to complete the activity.

This project gives a drawing with steps to complete the activity.

This project gives a drawing with steps to complete the activity.

This project gives steps to complete the activity.

Learners follow a step-by-step explanation of how to test fuses and circuit interrupting devices.