This object will allow the viewer to practice the necessary skills involved with sizing the water distribution system of a 1 family residence.

In an interactive exercise, learners identify the human body sites that harbor a normal resident flora and the sites that are sterile.

The student reviews the roles and responsibilities of the President and takes a quiz.

Learners view images of the presidents of the United States and click on the name of the president shown.

Learners read a description of the wiring configuration of a residential Edison Wire System, which consists of a transformer secondary circuit. The circuit supplies two 115-volt sources and one 230-volt source.

Learners view the waveforms and voltages of an Edison Three-Wire System and read a description of the polarities across the secondary of the center-tap transformer. This transformer supplies power to residential homes.