In this animated and interactive object, the learner designs a treatment plan that includes precautions and adaptive equipment.

Learners examine the factors that contribute to hip fractures including osteoarthritis, osteoporosis, and osteomalacia.

Learners read about five different fractures of the hip and the treatments used.

Learners examine and identify the parts of the hip joint.

In this interactive object, learners vary the value of the resistance to see how it affects current. Example problems are included.

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.

Students complete a questionnaire to help identify their readiness for business ownership.

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.

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 degree of saturation for a given sample of soil or aggregate based on the weight-volume relationship.

In this animated learning object, students examine the addresses of PLC elements and how they pertain to I/O connections and internal memory files.

In this screencast, students read about the key differences between management and leadership activities. They will review typical supervisory activities as either management or leadership.

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

In this animated object, learners examine the relationship between pressure and temperature in an air conditioning system.

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

In this learning object you'll examine the supply and demand curves and to demonstrate the effects on equilibrium price/quantity and on price ceilings and floors.

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

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 void ratio 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.