Learners examine how an electromagnet is formed. Animated illustrations show current running through a coil wrapped around an iron core.

Learners consider why an impedance matching transformer is needed to connect an antenna to a television.

In this animated activity, students view the plastic pellets in a profile extrusion machine being melted as the temperature of the heating elements is elevated by a time proportioning control system.

Students solve six problems for series impedance using complex numbers. Immediate feedback is given.

The schematic symbols of logic gates used in digital circuits are shown.

In this learning activity you'll describe the operation of an AND gate by using a truth table, a waveform diagram, a Boolean Algebra equation, a switch analogy, and a written definition.

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

In this animated activity, learners examine how various NAND gate configurations and the logic signals produced throughout the circuit perform the functions of all of the other types of logic gates.

This interactive activity represents the grid modeling technique, a heuristic model for choosing a centralized location for a manufacturing or distribution center within a supply chain network. The formula calculates a central point between the suppliers and the markets. This object requires the latest version of Flash Player.

Periodic table review

Guide the snake to the correct conjunctions without touching the edges of the game board!

Review for your chemical equation quiz

Addition and Subtraction one step equations