Learners review the VDR and work six problems. Immediate feedback is given.

In this animated object, learners are introduced to the structure and function of animal cell organelles.

Learners examine microscope images of blood agar and the various types of hemolysis that can be detected. A quiz completes the activity.

Learners examine the function of each part of a microscope and follow step-by-step instructions on how to focus on a specimen. They also review the proper use and care of a microscope and test their knowledge in two drag-and-drop exercises.

In this learning activity you'll explore bandwidth.

Learners follow step-by-step instructions for creating a current-state map to identify how materials and information flow.

In this animated object, learners examine the different phases of a cell's life.

Viewers watch an introduction to monosaccharides, disaccharides, and polysaccharides. The processes for dehydration synthesis and hydrolysis.

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

In this learning activity you'll create a packet filter.

In this animated object, learners examine water molecules moving through a semipermeable membrane.

In this animated object, learners examine the bones of the appendicular skeleton.

Learners examine the structure and function of skin including the production of melanin.

In this animated activity, learners examine hearing and balance. Detailed drawings of the outer, middle, and inner ear structures are included.

Learners examine how visual controls help to manage the workplace. Photos of visual controls are provided.

In this animated object, learners view molecules as they collide and move between two different solutions. They also observe what happens when the temperature of the solutions is raised or lowered.

Learners examine the operation of a proportional control amplifier and the two ways that it is programmed using proportional gain or proportional band. A brief quiz completes the activity.

Learners use this Structured Query Language tutorial to gain an understanding of how a SELECT statement is built. This learning object has audio content.

Learners examine a bank statement and a reconciliation form and study how to balance a checking account.

In this animated activity, learners examine how a voltage is induced into a conductor when the conductor cuts across magnetic flux lines. They also view the four factors that determine how much voltage is generated. A brief quiz completes the learning object.

In this animated and interactive object, learners examine ABO blood antigens and Rh antigens and their compatibility.

Learners examine the wiring of the primary components of the three types of DC motors, series, shunt, and compound. The operational characteristics of each type of motor are described. A quiz completes the activity.

Learners examine the fundamental concepts of sequencer output instruction. A simulated example shows a sequencer in operation.

Students read about the process of hair growth beginning with the joining together of amino acids.

In this animated activity, learners view the various hand, arm, and shoulder muscles in action. The students test their knowledge of the location of the muscles in a drag-and-drop exercise.