In this animated activity, the learner examines how a 74150 IC multiplexer and a 74154 IC demultiplexer work together when their data select lines are connected to the same input devices.

In this interactive object, learners view the icons and symbols used most frequently in value steam mapping. A matching activity completes the object.

Instructions on how to wire an integrated circuit are given.

Learners examine a 555 integrated circuit, which functions as a one-shot monostable multivibrator, and then test their knowledge. Immediate feedback is provided. Animations are used to show the sequential operations.

Learners observe the animated operation of an astable mulivibrator using a 555 IC (integrated circuit) chip and external components.

In this screencast, learners examine the internal elements of a 555 IC and their operation.

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

In this learning activity you'll review how to read a metric micrometer and use your knowledge to answer 12 questions.

Line Type Identification

In this animated and interactive object, learners follow steps to perform the process identification procedure for the Ziegler-Nichols Continuous Cycling Tuning Method. A short quiz completes the activity.

In this interactive object, learners examine a mind map of social stratification. Quiz questions complete the activity.

Students identify the enamel, cementum, cementoenamel junction, clinical crown, clinical root, and epithelial attachment of a tooth.

Learners read about nonverbal communication. In a drag-and-drop exercise, they evaluate photos of people interacting and determine if the behaviors shown interfere with communication or enhance it.

Learners apply the Law of Cosines to determine forces using a TI-36X calculator in this animated object.

In this animated object, learners examine different types of pneumatic actuators, cylinders, and motors.

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 animated object, learners use a TI-36X calculator to determine forces.

In this interactive and animated object, learners follow instructions for finding the lowest common denominator for a group of algebraic fractions. Immediate feedback is provided. This activity has audio content.

In this learning activity you'll explore how units in the metric system are related to each other and practice locating measurements on a metric line.

In this animated activity, learners examine how a voltage is induced into a conductor when the conductor cuts across magnetic flux lines. They also view the four factors that determine how much voltage is generated. A brief quiz completes the learning object.