In this animated and interactive object, learners identify the valves and chambers of the heart.

In this learning activity you'll explore family structure then enter terms in a grid identifying if that family structure is determined by females, males, or both.

The user completes a fill-in-the-blank exercise to review the anatomy of the heart.

In this video learners view the valves and chambers of the heart.

Understand pseudocode structure of Inputs and Outputs, a vital component of programming computer and industrial applications.

Students examine atomic structure and the octet rule.

Understand the pseudocode structure of variable declarations

Learners view the three zones of platelet structure, peripheral, structural, and organelle, and read about their functions.

In this activity, we will explain the mechanics of site structure and the role it plays in search engine optimization.

Understand the pseudocode structure of variable declarations, a vital component of programming computer and industrial applications.

Students view an enlarged, colorful depiction of the contents of an average square inch of skin.

Learners identify the major components of an aircraft and the functions of these components.

In this screencast, the learner identifies the kidney's internal and external structures.

In this screencast, learners identify the parts of the cardiovascular system and examine blood flow.

The learner constructs a nail and identifies the terms relating to the structures of the nail in a matching exercise.

Identify the correct description of pseudocode if statements.

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 chemistry behind table salt.

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

In this interactive and animated object, students distribute the valence electrons in simple covalent molecules with one central atom. Six rules are followed to show the bonding and nonbonding electrons in Lewis dot structures. The process is well illustrated with eight worked examples and two interactive practice problems.