With this highly entertaining four-minute animation, learners can visualize the basics of accounting.

Learners identify combination, decomposition, displacement, and combustion types of redox reactions. They also watch a video clip that demonstrates the reaction of sodium and water.

Learners examine a table of common polyatomic ions. Eight examples are provided for practice.

In this interactive object, learners use the ideal gas law to solve a practice problem.

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

In this animated activity, learners examine how organs are visualized in three dimensions. The terms “longitudinal,” “cross,” “transverse,” “horizontal,” and “sagittal” are defined. Students test their knowledge of the location of abdominal pelvic cavity organs in two drag-and-drop exercises.

In this animated object, learners examine the eight cranial bones, the fourteen facial bones, and the ribs.

In this animated object, students examine the role that the solubility of water plays in various biological functions.

In this animated object, learners trace the olfactory pathway from the nasal cavity to the olfactory cortex.

In this animated object, learners examine synthesis, decomposition, exchange, and reversible reactions.

In this well-illustrated object, learners examine basic floral anatomy. The flower is the reproductive organ of the angiosperm.

Learners use the coefficients in a balanced equation to develop the mole ratios of reactants and products involved in the reaction. Five interactive examples illustrate the method, and students test their knowledge by working four problems.

This learning object demonstrates the process by which antigens are identified, processed, and presented to mediators of the cellular immune system.

In this learning activity you'll review information on the neural synapse.

Learners view several movie clips that demonstrate the use of an indicator to follow the neutralization reaction that occurs when an acid and a base are mixed. Students test their knowledge in a series of questions. Immediate feedback is given.

Learners study the effect that pressure has on boiling temperatures. Once a liquid has reached a full boil, additional heat does not raise the liquid’s temperature; however, pressure can vary the boiling point of a liquid. A brief quiz completes the activity.

Learners examine graphs and read that the heat of fusion is the heat energy absorbed by one mole of solid as it is converted to liquid, while the heat of vaporization is the heat energy absorbed by one mole of liquid as it is converted to gas.

Learners complete two exercises. In the first quiz, they divide viruses into two categories: RNA and DNA. They later match each virus with the disease it causes.

In this module, we'll be introducing you to SIPOC, a powerful tool that can help you improve your business processes. It's a high-level process mapping tool that helps you identify the key components of a process and how they relate to each other. SIPOC diagrams are often used in Six Sigma and Lean methodologies, but they can be useful for any process improvement initiative. We’ll explain the key SIPOC components and demonstrate how to build one. Then, we’ll walk through a few scenarios and let you build your own.

Students examine atomic structure and the octet rule.