In this animated activity, learners examine hearing and balance. Detailed drawings of the outer, middle, and inner ear structures are included.

Students read about the different types of diabetes and the treatment methods available.

In this interactive object, people preparing to work in a medical office review the basic steps to follow when taking phone messages.

In this learning activity you'll observe the growth of gram negative organisms and determine if they're lactose positive or negative.

In this animated object, learners read about hydrostatic pressure and observe how it is used to measure the level of a material in a container.

In this interactive object, learners view various components of gears and read descriptions of them. Learners then identify the location of each of these components in a drag-and-drop exercise.

Learners apply the principles associated with Boyle’s Law. A brief quiz completes the activity.

In this animated activity, users examine the causes of malfunctions in a hydraulic pressure-reducing valve and the problems that result. A short quiz completes the learning object.

Learners compare the three scales used in pressure measurements: gage, absolute, and vacuum. A brief quiz completes the activity.

Choose the definition that matches the concept you are given.

B1, 3A

Atmospheric pressure

Tell whether the following sentences are in the active or passive voice.