Learners examine the components of the x-ray tubehead, a sealed, heavy metal housing that contains the x-ray tube that produces dental x-rays. This object is designed to help students understand the functions and safety features of the tubehead.

This primer introduces the student to the key terms and concepts associated with the silicon diode.

Learners review the process for calculating board feet and use virtual samples to practice the process.

Learners examine the internal parts of a DC electrical motor and then text their knowledge in a drag-and-drop exercise.

In this learning object you'll review color photographs of a Brown & Sharpe Universal Cylindrical Grinder.

In this interactive and animated object, learners examine the operation of a semiconductor diode when it is forward and reverse biased. A brief quiz completes the activity.

The learner will understand the design of a planetary gear drive and its advantages and disadvantages.

The learner will identify the advantages and disadvantages of the four modes of GMAW transfer.

By the end of this learning activity, you’ll know how to understand, use, and maintain different types of fire extinguishers.

Explore what time management is, how to use a time matrix, and how to put it all together and use our new time management skills to accomplish more during your days.

In this highly interactive and animated object, learners complete three exercises to identify the cranial nerves and their functions.

Students work practice problems to calculate the total resistance of a circuit. Feedback is provided.

Learners watch a video of a walk around inspection of a rough terrain lift truck from front to rear. Note: This object contains video clips. High-speed Internet is highly recommended.

In this animated activity, learners examine how cavitation occurs in a hydraulic pump. A video clip is included. Learners then test their knowledge in a brief quiz.

In this interactive object, learners examine how hydraulic oil is contaminated, the types of damage contamination can cause, and the methods used to clean the oil.

In this animated object, learners examine the operation of a pneumatic directional control valve using air pilot lines.

This learning object reviews the procedures for making medical appointments. It can be applied to manual and electronic methods of making appointments.

This project gives a drawing with steps to complete the activity.

In this learning activity you'll practice formatting a rejection letter by arranging customer service content.

In this animated object, learners examine how a coil of wire provides more resistance to AC current flow than an uncoiled wire. This learning object contains audio.

Learners read a description of the knob controls, pushbuttons and output terminals on the Wavetek Model 25 signal generator.

Learners examine the concept of the RC time constant. The instantaneous voltage across the capacitor is calculated.

Learners observe how an optical pyrometer is used to take temperature measurements without making physical contact with the object being measured.

Learners view animations showing methods of measuring the pH level of a solution using litmus paper and electronic instruments.

In this animated object, learners examine formulas for displacement and velocity ratios. They also view examples and calculate velocity and the velocity ratio.