In this animated object, learners examine the different types of joints and their movements.

In this activity, learners will rank the order of authorities.

Learners examine the accounting equation and classify accounts into the appropriate categories in drag-and-drop exercises.

Learners read about the process of dividing industrial goods into the categories of entering, foundation, and facilitating.

In this animated object, learners examine automated manufacturing systems classified as motion control, batch process control, and continuous process control.

In this animated object, learners examine the two types of optical encoders used in automation applications: incremental and absolute. A brief quiz completes the activity.

Learners read about the mutations that occurred in plants for the successful transition from an aquatic to a terrestrial existence. The classification of plants is based on these adaptive structures.

In this interactive object, learners read an explanation of the electrodes used for welding with the GMAW and FCAW processes. In two matching exercises, students test their knowledge of classification and specification numbers.

Learners examine the various classifications of airspace and the requirements to pilot an aircraft there. A quiz completes the activity. This object has sound.