In this animated activity, learners examine how the speed of a motor may change if the voltage from the power source fluctuates due to power line irregularities. This lesson has audio content.

The student identifies the anatomical parts of the ear and learns the purpose and function of these parts. A review follows the lesson.

Students read descriptions of the voltage, current, and turns ratios of the primary and secondary coils for a transformer in this interactive lesson.

In this animated lesson, learners follow the steps required to read the phase shift difference in degrees between two AC waveforms.

This animated lesson shows the operation and characteristics of thru-beam optical sensors.

Users examine ways for students to give feedback to their instructor about what they have learned and what part of the lesson is not clear.

This animated lesson shows how a ladder circuit uses timer-on delays to cause an extrusion machine to operate.

This lesson gives the student an overview of grinding wheels and pedestal grinder procedures.

In this animated lesson, students read how reducing the thickness of a food is an important factor in cooling it. They also read FDA guidelines for food temperatures.

This animated lesson an exercise that enables students to design a ladder logic circuit using a drag-drop function to cause the cylinder of a hydraulic circuit to extend and retract.

This lesson provides a drawing with steps to complete the activity.

This lesson provides a drawing with steps to complete the activity.

In this lesson on atomic structure, learners examine how the binding energy of electrons affects light production in certain phosphors used in x-rays.

This lesson provides a drawing with steps to complete the activity.

In this animated activity, students view a step-by-step approach for how to connect an ammeter to a circuit. A brief quiz concludes the lesson.

Students locate the enamel, cementum, cementoenamel junction, the anatomic crown, and the root of a tooth in this interactive lesson.

In this interactive lesson, students use critical thinking to determine the best lean manufacturing initiative when solving problems for the fictitious Batchless Manufacturing Company.

In this interactive lesson, learners study examples of nouns that can be counted and nouns that cannot. They then identify whether a word is a "count" or a "noncount" noun in a practice exercise.

In this animated lesson, students view the operation of an electromechanical relay. A brief quiz concludes the activity.

In this animated lesson, students read an analogy comparing water in a "special" water tank to the current "flow" through a capacitor.