Learners examine the operation of the on-off control mode using a home heating example. A short quiz completes the activity.

Learners examine an animated view of the operation and programming requirements of a PLC Examine-On instruction. A brief quiz completes the activity.

Learners read the definitions of the prepositions "in," "on," and "at" and view examples of how these words are used. They then complete an exercise by inserting the prepositions into sentences.

In this interactive object, learners view a practical application of a PLC Timer-On function.

Learners view an animation showing the one-shot operation of a programmable logic controller.

Learners read the definitions of working capital, current ratio, quick ratio, return on equity, accounts receivable turnover, and inventory turnover.

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.

In this learning activity you'll write a description of a can opener.

This project gives a drawing with steps to complete the activity.

In this learning activity you'll define and explain the broad steps in achieving quality in an organization.

Learners review descriptions of 10 personality disorders and then test their knowledge in an interactive softball game.

In a series of practice problems, learners use the substitution method to solve systems of linear equations, also called "simultaneous linear equations."

Learners read how to set up a TI-86 calculator. The process is demonstrated and examples are given.

In this animated object, learners examine the operation of a feed-forward control system and its advantages over a closed-loop system. A brief quiz completes the activity.

Learners follow the progression of a sexual harassment situation and recount the steps the victim took to deal with the problem.

Explore what passive transport diffusion is and how it moves water through a membrane.

In this animated object, learners examine the ratio control method used in automation when two or more ingredients are mixed. A brief quiz completes the activity.

Learners work problems to make conversions between RMS, average, peak, and peak-to-peak AC voltages.

In this screencast, you'll distinguish the differences between the content message and the relational message.

In this learning activity you'll review definitions then match the transactional communication model element with the definition or example.