In this learning activity, you'll identify behaviors of the three ego states and practices their use.

In this 3D animated object, learners examine the way in which a three-phase generator produces three sine waves with three armature coils. A quiz completes the activity.

In this animated and interactive object, learners examine the properties of liquids, solids, and gases.

In this animated activity, learners study how stator poles create a rotating field in a three-phase AC motor as a three-phase AC voltage is applied.

In this learning object, you will learn the three tips to better resolve conflict with others.

In this learning activity you'll identify TCP and UDP port states and how they behave during interaction.

In this learning activity, you'll identify the three types of sexual harassment.

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

In this animated object, learners examine the mechanical configuration of a three-way switch and how it operates in a circuit. They also view diagrams showing the use of an ohmmeter to determine the electrical connections.

This document is a visual and text description of the three-wire method for measuring screws for use with a lathe.

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.

In this interactive object, learners follow steps to find phase voltages in a partial three-phase power distribution circuit.

Learners examine the periodic table to identify metallic elements that have either fixed or variable oxidation states.

In this interactive object, learners examine the characteristics of osteoarthritis, rheumatoid arthritis, and osteoporosis. Students then describe the precautions to be aware of when working with clients who have arthritis and identify assistive devices that clients might use to prevent injuries at home.

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

In this interactive object, learners change the amount of money received from tax revenue and the amount spent on federal programs as they calculate how fiscal policy affects the gross domestic product (GDP), unemployment, inflation, the annual deficit, the national debt, and interest on the national debt.

The learner will apply the three formulas used to find the total resistance of three types of parallel resistor circuit configurations.

Learners review the three formulas for power and work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and asked to solve for power. Immediate feedback is provided.

Learners review the three formulas for power and work 12 problems. In each of the problems, students are given two of the three variables (voltage, resistance, or current) and asked to solve for power. Immediate feedback is provided.

In this learning activity you'll test your knowledge of the roles and differences between the two Houses of Congress - the Senate and the House of Representatives.