Students view a video that shows the correct methods for starting a GTAW weld pool and adding filler. It focuses on the two problems that many students have – adding filler too soon and angling the torch so that the filler melts prematurely on the filler rod. Note: This activity is 3.6 mb.

In this highly interactive and animated object, learners examine the VAT-40 battery starting and charging system tester and study how the tester is used to diagnose vehicle starting system problems. This object has audio.

Learners evaluate how well a set of directions instructs a person about to perform a task for the first time. The focus is on avoiding assumptions.

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 interactive and animated object, learners examine the SUN VAT-40 battery starting and charging system tester. This learning object demonstrates the use of the tester in diagnosing conventional 12-volt automotive charging systems. It contains audio.

In this screencast, learners follow steps to determine the proper starting belt length for a timing, flat, or v-belt drive.

Learners study animation showing the operation of an AC wound-rotor motor with its external starting resistors. A short quiz completes the activity.