In this learning activity you'll read about efforts to prevent the government from interfering with citizens' rights to practice their religious beliefs.

In this animated object, learners examine the operation and programming requirements of a PLC Examine-Off instruction. A brief 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 a description of inductors and view examples of inductors in series and in parallel.

In this animated object, students examine the role that the solubility of water plays in various biological functions.

In this interactive object, students view the various positions used during medical examinations. They then match the names of the positions with the correct images and with their descriptions.

Learners perform the steps required for the Ziegler-Nichols Reaction Curve Tuning Method. The process identification procedure is performed, calculations are made, and the proper PID values are programmed into the controller.

In this interactive object, learners follow the steps required for the Ziegler-Nichols Continuous Cycling method. The process identification procedure is performed, calculations are made, and the proper PID values are programmed into the controller.

This learning object is designed to assist students in understanding and interpreting collision evidence found in automotive lamps. In particular, the concepts of Hot Shock, Cold Shock, Hot Break, and Cold Break will be visually addressed.

Learners solve two sample problems for a mechanical reasoning assessment.

Learners solve two sample problems for an abstract reasoning assessment.

Students read how profits can be doubled with the elimination of only a fraction of the "waste" in a company's operation.

In this animated and interactive object, learners use a color code to understand the operations of a hydraulic circuit. A brief quiz completes the activity.

Learners choose the meaning of a selected word in a sentence.

Learners read a passage and answer two questions based on the information found it that passage. Immediate feedback is provided.

Learners mentally manipulate two-dimensional diagrams to visualize the objects in their three-dimensional forms.

Learners solve two sample problems for a numerical reasoning assessment.

Learners examine how chemists use moles to "count" atoms by weight. Examples are given.

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

The current-to-voltage conversion of the transresistance amplifier is examined. The formulas for output voltage and impedance are defined and an example ties the concepts together.