In this animated object, learners examine the signals produced at the N.O. (normally open) and N.C. (normally closed) outputs of sourcing and sinking four-wire sensors. A brief quiz completes the activity.

You will learn four steps for good goal setting.

In this activity, you will practice choosing assertive responses to conflict.

In this learning activity you'll explore how visual perception influences your understanding of unstable figures.

In this animated object, learners examine synthesis, decomposition, exchange, and reversible reactions.

Students examine an Excel spreadsheet to determine range, class, and width.

In this video, you’ll explore how to set up the chuck, face your part using a left-handed and right-handed tool, center drilling, and facing the part to length.

In this animated and interactive object, learners calculate the maximum velocity of the work stroke and the return stroke.

Students read about the four steps to creating an ac model and view examples.

The learner examines the four different ways that a caliber can be used to measure dimensions and distances.

In this screencast, the student will learn that regardless of the surface onto which a blood droplet is falling, the angle or velocity at which it does so, or the volume of the droplet, there are four distinct phases involved in the reaction of a moving droplet with impact against a surface.

This animated object allows students to examine the four steps used to reduce a complex circuit to a simple series circuit.

Learners follow the path of a carbohydrate food from consumption through digestion to absorption into the bloodstream. In a matching exercise, students identify the main type of carbohydrate found in four different foods.

Atomic weights are used to convert the mass of a sample into the number of moles of the element in the sample and vice versa. Four examples are provided for practice.

Learners examine four stages of rheumatoid arthritis and compare them to the normal synovial joint.

In this interactive object, learners review the four types of hypersensitivity and check their knowledge of alternative names, mediators, and various antigens and disease conditions.

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

In this interactive object, part 3 in a series, learners follow the steps of the “mathemagician” to examine four numerical curiosities: What’s Special About 1089, Perfect Squares: 1089 and 9801, The Mathematical Significance of 1776, and The Calculator Number Game. The learner will also study six number patterns and look at one remarkable table. Immediate feedback is provided.

In this animated activity, learners examine the symptoms of four cardiac conditions: coronary artery disease, myocardial infarction, congestive heart failure, and valvular disease.

Users of this learning object evaluate the early online experiences of four hypothetical students and record the lessons that can be learned about what to do and what not to do to create effective online learning environments.