Boyle's Law states that gas volume varies inversely with the pressure at constant temperature and is described by the equation PV = constant. An example of a sample of gas at two conditions of P and V is used to illustrate the law.

In this animated object, learners examine the different types of joints and their movements.

In this highly interactive object, learners read client case studies and then select the vaccines that are appropriate to administer.

In this interactive object, learners use the Law of Cosines to calculate forces.

In this animated activity, learners compare the van der Waals equation with the Ideal Gas Law.

In this animated activity, sexual reproduction in animals is contrasted with the alternation of generation lifecycle of plants.

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

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.

In this interactive object, learners examine how to properly dilute hydrochloric acid.

In this animated object, learners examine neutral fats, phospholipids, and cholesterol. The molecular formula and general function for each are shown.

In this animated object, learners examine neutral fats, phospholipids, and cholesterol. The molecular formula and general function for each are shown.

Learners examine the function and wiring of the sympathetic nervous system.

In this animated activity, learners examine the two major phases of cell division: mitosis and cytokinesis.

Practice how to make research decisions using the 3 Rs.

In this screencast, learners read how microbes in such items as yogurt, bread, insulin, and insect sprays improve our lives.

In this animated object, learners examine the chemistry behind table salt.

In this interactive object, learners determine the limiting reagent and the excess reagent in chemical reactions. Learners test their knowledge by solving three problems.

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

In this interactive object, instructors use an extensive inventory to assess their beliefs and uses of assessment. The inventory is based on the work of educators supported by the American Association of Higher Education Assessment Forum in 1996.

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