In this animated activity, students read about weight-volume relationships within a given sample of soil or aggregate. They complete problems using a 3-phase diagram.

In this learning activity you'll examine how firewalls block viruses by discussing trusted, semi-trusted, and untrusted networks.

In this learning activity, you'll discuss shifting perceptions of parents at different life stages.

Learners will examine the four steps to listen actively to improve relationships.

Students read an explanation of the use of weight-volume relationships and practice calculating density.

In this learning activity, learners will reflect on the meaning and impact of stereotypes in both personal relationships and work environments. Identifying behaviors, attitudes, and feelings associated with stereotypes are addressed in this activity.

Students read how to determine and calculate the degree of saturation for a given sample of soil or aggregate based on the weight-volume relationship.

This interactive learning object demonstrates how the moisture content is determined for a given sample of soil or aggregate.

Students read about the concept of unit weight relating to the 3-phase diagram and perform calculations.

Students read how to determine and calculate the saturated density for a given sample of soil or aggregate, based on the mass-volume relationship. Practice problems complete the activity.

Students read how to determine and calculate the saturated unit weight for a given sample of soil or aggregate, based on the weight-volume relationship. Practice problems complete the activity.

In this learning activity you'll explain how voltage and resistance in a series circuit affect current flow.

Students read how to determine and calculate the dry density for a given sample of soil or aggregate based on the mass-volume relationship.

Students read how to determine and calculate the void ratio for a given sample of soil or aggregate based on the weight-volume relationship.

Students read how to determine and calculate the dry unit weight for a given sample of soil or aggregate based on the weight-volume relationship.

Learners view a demonstration showing that line-neutral voltages and line-line voltages are not in-phase with each other, but have a definite 30-degree relationship.

Students read how to determine and calculate the porosity for a given sample of soil or aggregate, based on the weight-volume relationship.

The learner will explore the techniques used to identify cause-and-effect relationships of a particular problem.

In this screencast, learners examine the concept of gear ratios. The number of teeth, diameters, and velocity relationships are discussed and calculated using linear ratio equations.

In this learning activity you'll examine the difference between two types of interactions with customers, encounters and relationships.