Learners examine phase diagrams that show the phases of solid, liquid, and gas as well as the triple point and critical point.

In this screencast, learners read descriptions of the actions of the superficial skeletal muscles and see their locations.

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

In this screencast, learners examine the lifecycle of fungi including asexual and sexual reproduction. Learners test their knowledge by identifying a diagram. There is a companion crossword puzzle game here: https://www.wisc-online.com/arcade/games/natural-science/science-biology/3016/the-zygomycetes-crossword

Learners read how fruits are classified according to their texture and according to how they developed from their floral anatomy.

In this interactive and animated object, learners examine the characteristics, ecological importance, and lifecycle of the ascomycetes of the fungi kingdom.

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 compare the mode of action of steroids with the action of amino acid-based hormones.

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

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

Learners read a description of torque and study the factors that cause its magnitude to change.

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.

In this interactive object, learners calculate the amount of heat evolved or absorbed in chemical reactions. Four practice problems are provided.

Learners read about the mutations that occurred in plants for the successful transition from an aquatic to a terrestrial existence. The classification of plants is based on these adaptive structures.

In this well-illustrated activity, learners examine the three types of intermolecular forces: dipole-dipole forces, London or Van der Waals forces, and the hydrogen bond. Two interactive questions are included.

In this screencast, learners read about the seven hormones that help regulate blood glucose.

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

Students examine standard pressure in this interactive object.

In this screencast, you will learn about the 24 time zones.

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 animated object, learners examine the major descending tracts of the nervous system. A matching exercise completes the activity.

Learners examine the method for calculating the atomic weight of copper from the natural percent composition of each of its two isotopes.

In this interactive object, learners read about the occupations that are most at risk for bloodborne pathogen exposure. They also read about the most common pathogens and how they are transmitted. This learning object is based on information from the U.S. Occupational Safety and Health Administration.

Learners read and listen to the pronunciation of hundreds of medical terms that are arranged in a "jukebox." The terms are listed alphabetically and according to the following categories: aerobic and anaerobic microorganisms, blood bank, coagulation, fungi microorganisms, hematology, protozoa, and urinalysis. This learning activity requires a computer that is equipped with speakers.

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.