This lesson provides a drawing with steps to complete the activity.

In this screencast, learners examine why the piston of a hydraulic cylinder extends slower than it retracts. A brief quiz completes the activity.

In this animated object, learners examine how to find the center of gravity of a steel rod and of a two-dimensional shape.

In this interactive object, students view an animated depiction of Class 3 levers. A matching quiz completes the activity.

Students view a video that shows the correct methods for starting a GTAW weld pool and adding filler. It focuses on the two problems that many students have – adding filler too soon and angling the torch so that the filler melts prematurely on the filler rod. Note: This activity is 3.6 mb.

In this interactive object, learners read an overview of records management and then classify records as "vital," "important," "useful," or "nonessential" in a drag-and-drop exercise.

Learners read about lab equipment and basic safety measures. In a quiz, they view photos and determine if the lab technicians pictured are using safe practices.

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.

In this learning activity you'll explore the functions and proper operation of a digital multimeter.

The learner will identify the three general types of ethics.

The learner will evaluate powers of 10 with integer exponents and multiply decimal numbers by powers of 10 with integer exponents.

TIG Electrode Matching

In this screencast, learners read an explanation of the file rules and indexing that have been developed by the Association of Records Managers and Administrators.

The learner will understand the operation of motor control circuits used to start and stop three-phase motors.

In this learning activity, you’ll explore the characteristics of common, carbon steel shielded metal arc welding electrodes, which fall under American Welding Society specification A5.1.

In this animated object, learners read about the uses of nanotechnology. The sciences, engineering, electronics, and other disciplines converge in nanotechnology. Examples are given for applications in manufacturing, biomedicine, and environmental science. Concerns about possible environmental effects are discussed.

Learners read and listen to tips for organizing farm-related financial information.

In this screencast, students read about the basic organization and structure of the periodic table of elements. Students identify elements as belonging to a group, a period, or neither.

Learners will understand how the interaction of the armature magnetic field and the rotating stator field cause the rotor of a single-phase AC motor to turn.

Explore the history behind today's eLearning best practices in this introduction to our design principles series.