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.

Learners review guidelines for the proper use of a dial caliper. Illustrations appear throughout the learning object.

In this video, you’ll learn how to make changes to an engine lathe.

Users read work instructions and view a drawing and calculations for turning on a lathe using a digital readout.

This learning object shows the symbols used to represent the type of pulse required at the clock input to activate flip-flops.

In this animated activity, learners view the input and output leads of a JK flip-flop. They also see how it functions in each mode of operation. A brief quiz completes the learning object.

In this animated object, learners examine three different types of multivibrators: astable, monostable, and bistable. A brief quiz completes the activity.

The two types of digital devices, logic gates and flip-flops, and the types of basic operations they perform are presented.

In this animated activity, learners view the flip-flop and read about its outputs, the information it stores, and its storage conditions. A quiz completes the lesson.