The learner will use an edge finder to locate the edge of a workpiece.

Students read how to set up the optical comparator edge detector in this interactive learning object.

The learner tests his/her ability to set up the optical comparator edge detector using a virtual simulation of the machine.

Students read about the edge-finder's parts and assembly, and view video clips of the tool in action.

In this lesson on atomic structure, learners examine how the binding energy of electrons affects light production in certain phosphors used in x-rays.

The learner constructs a nail and identifies the terms relating to the structures of the nail in a matching exercise.

Learners follow design steps incorporating a bleed, a technique used to allow for inaccuracies in the printing and trimming processes.

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

Learners test their ability to visualize a mounting wedge in this interactive exercise that features animated pictorial views.

2D and 3D views used to help convey information from a drafter or designer to the welder are provided. This activity will focus on a mounting wedge. A short quiz to test your ability to correctly read this information follows.

Learners match diseases with their portals of entry, causative agents, and associated vectors.