In this animated object, learners examine how the purge pressure system is used to measure levels of material. A brief quiz completes the activity.

Learners examine first and second approximations and view examples of a "stiff" current source.

In this interactive object, learners solve for total resistance and current, the current through each resistor, the voltage across each resistor, and the power dissipated.

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

The learner constructs a nail and identifies the terms relating to the structures of the nail in a matching exercise.

The explanation and use of timing diagrams used in digital electronics to graphically show the operation of various circuits are given.

In this animated object, learners study how displacement level sensors are used to measure the level of liquid in a tank.

In this animated object, learners observe the operation of a J thermocouple with a cold junction. A table is used to convert the voltage it produces to a corresponding temperature. A brief quiz completes the activity.

In this animated learning object, learners examine how an ultrasonic flowmeter measures the flow of liquids through a pipe using ultrasonic sound waves. A short quiz completes the activity.

Compare and contrast the mechanical functions and the anatomy related to the knee joint.

Six questions

Functions & Slope-Intercept Form

Players will evaluate and interpret function notation.