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 interactive object, learners demonstrate the proper tightening sequence for mechanically joining two mating surfaces.

Learners view examples of waste in an office environment and are asked to consider what they can do to eliminate or reduce waste in their own workplace.

In this animated object, learners examine the operation of a summing operational amplifier through formulas, tables, and animated illustrations. A brief quiz completes the activity.

In this interactive and animated object, learners examine the flow of electron current into and out of hot and neutral sockets during each alternation of an AC waveform. A brief quiz completes the activity.

Learners read about the concepts of true power, reactive power, and apparent power, and are introduced to the power factor formula. A short quiz completes the activity.

Students read about the concept of true power and view examples of how it is dissipated as heat is provided.

Learners read an explanation of the concept of apparent power in a power distribution system involving motors, generators, and transformers. A quiz completes this interactive lesson.

Students read an explanation of reactive power in a power distribution system involving motors, generators and transformers. A brief quiz completes the activity.

Grade 8 Physical Science

You'll practice solving problems using the rule for multiplying powers with the same base.

Tic-Tac-Toe Game of Ergonomic Principles (Ref: Ergonomics: The Study of Work OSHA 3125)