In this animated object, learners examine the operation of two-way, three-way, and four-way directional control valves used in pneumatic systems.

Learners read an explanation of the RL time constant and examine the formula for calculating the instantaneous current value. The current is graphed as it climbs to maximum or drops to zero. Note* In the formulas in this module, the Greek letter epsilon should be the mathematical constant 'e'.

In this animated object, learners examine an analog closed-loop feedback system that uses potentiometers to control the position of a gear rack.

The learner solves for Zin(base), Zin(stage), Zout, and Av. A "help" screen is available.

Learners read how an inductor opposes a current change when it begins to energize and when it begins to de-energize. A short quiz completes the activity.

Learners compare electromagnetic quantities with the voltage, current, and resistance quantities of an electrical circuit. A brief quiz completes the object.

In this interactive object, students view an animated depiction of Class 1 levers. A matching quiz completes the activity.

In this interactive object, students view an animated depiction of Class 3 levers. A matching quiz completes the activity.

Learners apply lever ratios to calculate the mechanical advantage in basic mechanisms.

Inspired by the game "Who wants to be a billionaire". Composed of 10 questions and in each question there are added trivias or facts related to the topic.

This game will review concepts for 8th grade science and the study of force.

A series of 20 questions based on the packet.

In this game the player must reflect back to the unit of Forces. Use your computer arrow keys to direct your snake to the correct answer. Avoid the spikes around the edge of the board and collect snacks for extra points.