Learners will write effective business messages that incorporate a second-person point of view and focus on the benefit to the reader. This approach is often used to create positive messages, neutral messages, and inquiry messages in business settings.

Learners observe that the melting of a solid and the freezing of its liquid occur at the same temperature. The melting point is an intrinsic property and is used to identify a substance.

In this interactive object, learners examine sectional views used in engineering drawings. The sections shown are full, half, offset, aligned, revolved, and broken-out. Learners match drawings of sectional views with the names of the views.

Learners examine how the boiling point increases with increasing pressure. An example from industry is given.

Learners read about the benefits of storing raw materials within 3 feet of the work area where they will be used.

Learners examine first and second approximations and view examples of a "stiff" current source.

In this learning activity you'll identify points on a coordinate system.

Learners review descriptions of 10 personality disorders and then test their knowledge in an interactive softball game.

In this learning activity you'll be introduced to programming pointers compatible with both the C and C++ languages.

Explore the different types of personal protective equipment, which protects you against workplace hazards

In this learning activity, you'll be introduced to what personas are, explore how to create one, and understand why they're important.

In this learning activity you'll examine force, mass, and acceleration to understand this "Law of Acceleration."

Read about the difference between the subject and object form of personal pronouns and test your knowledge in practice exercises.

Students view a world map and click on a country or continent to read about how the people there view time. A brief quiz concludes the activity.

Learners examine phase diagrams that show the phases of solid, liquid, and gas as well as the triple point and critical point.

Learners develop 3D visualization skills by examining front, side, and top orthographic views of objects. Using this information, students select the corresponding isometric view of each object.

In this interactive and animated object, learners examine orthographic projection and the Glass Box Theory. Front, side, and top view development is demonstrated with pictorial views of each object to help develop 2D to 3D visualization skills.

In this interactive object, learners practice their 3D visualization skills by identifying the correct isometric view of an object. Front, side, and top orthographic views are shown.

Learners view the waveforms and voltages of an Edison Three-Wire System and read a description of the polarities across the secondary of the center-tap transformer. This transformer supplies power to residential homes.

The learner will understand how to view an object for interpretation in the standard orthographic format and then accurately sketch three orthographic views using 3rd angle projection.