Students use trigonometry to find the coordinates of the blending point where a line and an arc meet. Learners are given the coordinates of the center of the arc, the radius of the arc, and the direction of the line.

In this interactive object, learners examine the neuron pathway into and out of the spinal cord. They complete the activity by testing their knowledge of vocabulary and the location of spinal cord structures.

Learners read how to use the arctangent function to calculate the theta of an angle. The proper keystrokes are displayed.

Learners view wire feed power sources ranging from 110-volt, single phase units to 460-volt, three-phase units. A description and photos of each are provided.

Robotic welding is revolutionizing welder safety, efficiency, and technique. Knowing how to program a robotic welder is key in this ever-changing industry. In this module you’ll explore what Through-Arc Seam Tracking (TAST) is, discover how it works, and see it applied on the job.

This primer introduces the student to the correct method of using the arctangent function on a TI-86 calculator.

In this interactive object, learners answer questions about doing research on the Internet.

Users study a chart containing numbers 1 to 99 and look for trivial palindromes as well as double and triple iteration palindromes. The reverse and add technique is demonstrated.

In this learning activity you'll explore the differences between primary and secondary research.

In this learning activity, you'll be introduced to three common usability research methods.

Students read about the scientific method and the three main types of research. They enter their answers to questions on the screen.

Robotic welding allows welders to create more consistent and higher quality welds. But, it requires you to understand the terminology associated with its programs. Watch this module to review terminology associated with robotic arc welding and the weaving process.

Students view information taken from various sources and decide if the material is acceptable for a technical research report. After choosing whether or not the source material is acceptable, the students read an explanation from the instructor.

The Animal Welfare Act, or AWA, gives protection to animals used in research, education, and entertainment. Explore ethical use and some of the current alternatives in this module.

Students read about the phenomenon of people trying to do their best to be good subjects when participating in research.

In this learning activity you'll use Maslow's Hierarchy and choose which need is taking precedence and which is being sacrificed in each situation.

Students read about the continent of Antarctica and view maps. A short quiz completes the activity.

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.

Explore the AngularJS framework, learn how it’s used to architect, and organize code when building web applications.