The student reviews definitions of all ready/already and completes a practice exercise.

In this learning activity you'll discover how your visual perception influences your understanding of ambiguous figures.

Introduces two methods of determining bend allowance; one is simple and is an approximate, the other is more precise. Interactive part has learner calculate bend allowance and blank size.

With this highly entertaining four-minute animation, learners can visualize the basics of accounting.

Learners tackle this interactive learning object after studying the mathematics of buying. This activity ties together the ideas of net cost, list price, trade discounts, cash discounts, net cost equivalent, and single discount equivalent, as well as the concepts of part, base, and rate.

Learners answer questions about nonferrous metals and alloys using a game show format. Immediate feedback is provided.

Learners answer questions about ferrous metals and alloys using a game show format. Immediate feedback is provided.

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.

Learners follow an EMT response at a restaurant involving a woman with slurred speech who has weakness on her right side. Students examine response procedures, resources, and medications.

Robotic welding is an increasingly popular tool used in industrial welding applications. Knowing how to program the robot is key. Explore how to improve your programming skills by using if-then-else, calls and unconditional jumps in this learning activity.

In this interactive object, students work 11 practice problems and solve for total resistance and current, the current through each resistor, the voltage across each resistor, and the power dissipated.

Students read how to determine the total impedance of a parallel circuit using complex numbers. The "J" term is used in the calculations.

Learners examine the changes in current and voltage values in a parallel circuit when open and short conditions develop. Ohm's Law calculations are shown, and a brief quiz completes the activity.

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 by each resistor.

Students work six practice problems to determine the total impedance of a parallel circuit.

Learners view practical examples of how a Hall-effect sensor is used.

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 by each resistor.

Learners examine a series-parallel circuit and solve 14 problems related to voltage, current, and power. A help screen is provided.