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.

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.

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

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

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

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.

Learners read a description of inductors and view examples of inductors in series and in parallel.

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

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

Learners solve two sample problems for a mechanical reasoning assessment.

Learners solve two sample problems for an abstract reasoning assessment.

Learners solve two sample problems for a numerical reasoning assessment.

Boyle's Law states that gas volume varies inversely with the pressure at constant temperature and is described by the equation PV = constant. An example of a sample of gas at two conditions of P and V is used to illustrate the law.

In this animated object, learners examine how gas volume varies directly with absolute temperature (K at constant pressure). An example of a sample of gas at two conditions of volume and temperature is used to illustrate the law.

In this animated and interactive object, learners examine a heat exchanger as an example of an automated closed-loop system.

Students read an introduction to the transconductance amplifier. They also view formulas for voltage-to-current conversion, closed-loop input, and output impedance. An example of how R1 controls the conversion factor is given.

Students view an example of how to convert rotational velocity to linear velocity. They then work practice problems.

The ohmic region of the E-MOSFET is identified. Formulas are given to determine the proper operation in the ohmic region. An example of circuit analysis is also given.

In this animated object, learners view a race of two boats as an example of how the derivative function of a PID controller shortens the time duration of an operation.

In this animated object, learners follow the steps for solving word problems using algebra. An introductory example is explained.