Students view a video that shows the correct methods for starting a GTAW weld pool and adding filler. It focuses on the two problems that many students have – adding filler too soon and angling the torch so that the filler melts prematurely on the filler rod. Note: This activity is 3.6 mb.

This text document lists 27 safety items to consider in a machine shop.

Learners explore the use of complex numbers through a series AC circuit analysis problem. The steps are compared to the graphical method of finding circuit impedance and the phase angle.

In this animated activity, learners examine the conversion of electrical energy into an electrostatic charge within the dielectric material of a capacitor.

In this learning activity you'll examine how electronic converters convert between analog voltages and proportional digital signals.

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

In this learning activity you'll practice converting between hexadecimal and decimal and between hexadecimal and binary numbers.

Students read information about basic logic gates including the gates' names, symbols, Boolean expressions, pronunciations, and truth tables. They then complete a matching exercise.

Students answer 10 questions in a sample exam. This exercise covers number systems, number conversion, logic gates, and combinational design. Feedback is provided.

Are you an AWESOME Digital Citizen? Answer the questions correctly about being a digital citizen.

You'll focus on terminology related to designing a hypothetical program.

Test your knowledge of multimedia acronyms commonly used in the computer industry.

Tic Tac Toe on Digital Citizenship