In this colorful and animated activity, learners study the operation of a needle valve and the operation of the needle valve with a check valve. A brief quiz completes the activity.

This learning object introduces the three approximations of a diode.

The learner will examine how torque is developed in an induction motor.

In this animated activity, students examine the difference between opens and shorts in an electrical circuit. A brief quiz completes the object.

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

In this animated object, learners examine processes that do not use ATP directly including hydrostatic pressure and facilitated diffusion with carrier proteins.

In this animated and interactive object, learners identify the valves and chambers of the heart.

In this learning activity you'll review the six different ways in which electricity is produced: chemical, friction, heat, light, magnetism, and pressure.

In this animated activity, learners examine the operation of hydraulic directional control valves and the internal components that divert the fluid.

How well do you know your air brake parts?

Show everyone how much you know about heat and heat transfer by solving these 7 Terms!

You'll be introduced to commonly used acronyms within the computer industry.