In this learning activity you'll assembles parts of a virus and match virus terms and descriptions.

Learners examine the functions of the three types of memory used by an Allen-Bradley SLC-500 programmable logic controller: the Executive ROM, Scratch Pad, and Processor File.

In this animated object, learners examine the various connective tissue layers of the muscle organ. The terms "prime mover," "synergist," "antagonist," "origin," and "insertion" are defined.

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

In this animated and interactive object, learners examine how blood flows through the heart and lungs. A brief quiz completes the activity.

Explore the location, structure, and function of the juxtaglomerular (JG) apparatus.

In this learning activity you'll review the structure and function of the different tissues of the human body.

Learners read a general description of the function and structure of leaves and examine drawings and microscopic views. A matching exercise completes the learning object.

This learning activity explains how site structure and organization can have a positive effect on optimization and driving traffic to your website.

Explore what proteins are, their structure, and their functions.

In this colorful and interactive object, learners examine the structure and function of muscle and connective tissues. A quiz completes the activity.

Learners examine the location, structure, and function of the unipolar and multipolar neurons.

Students read about the Federal Reserve System's structure and goals and the tools it uses to control the flow of money and credit in the economy. At the end of this activity, learners are asked to write how they would solve specific economic problems if they served on the Fed's Board of Governors.

In this video you'll study the structure of the cell membrane and construct it using the correct molecules.

In this screencast, students read about the basic organization and structure of the periodic table of elements. Students identify elements as belonging to a group, a period, or neither.

In this screencast, learners examine the internal structure of an unloading valve. This learning object includes a video clip demonstrating the use of an unloading valve in a metal stamping application.

In this learning activity you'll discover three factors that affect group performance: group cohesiveness, communication structure, and individual roles.

In this interactive object, learners work 11 problems covering atomic structure, conductors, and insulators.

Learners view an animation of a sequence valve in operation and examine the valve’s internal structure.

Learners view an animation of a counterbalance valve in operation and examine the valve’s internal structure.