In this interactive object, learners test their knowledge of 14 geometric tolerance control symbols.

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.

Learners study animated rheostat settings that show how varying the current flow affects the amount of power that is dissipated in a series circuit. Nine review questions complete the activity.

In this interactive activity, students read about the colored stripes on a resistor and interpret the placement of those colors to determine the value of four-band resistors.

Students read about the three main classes of amplifiers and view graphical representations of the collector current and circuit.

In this animated object, students view diagrams of the UJT as it is used in the relaxation oscillator circuit. Waveforms illustrate how the circuit operates through several time periods.

Learners analyze a base-biased npn transistor circuit. A "help" screen is available.

Learners analyze a base-biased npn transistor circuit. A "help" screen is available.

Learners analyze an emitter-biased npn transistor circuit. A "help" screen is available.

Physics is the branch of science that deals with the structure of matter and how the fundamental constituents of the universe interact. It studies objects ranging from the very small using quantum mechanics to the entire universe using general relativity .

Tic tac toe with things related to an orchestra.

Introduction of transistor

This game is a review about our material on electricity.