In this animated activity, learners explore three major methods of heat transfer and practice identifying each.

In this learning activity you'll study the structure of the cell membrane and construct it using the correct molecules.

In this interactive learning activity, learners review the terms used to describe relative position of body parts in order to have a common set of words to describe their position. Check out our video on relative position: https://bit.ly/2kTXujp

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

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

Learners view an explanation of how to read a graduated cylinder by measuring the lowest portion of the meniscus. A quiz completes the activity.

In this animated object, learners read an introduction to protein structure and function.

In this learning activity you'll review how every protein molecule of an organism is synthesized by that organism in a prescribed process. This activity helps students understand the fundamental life process of making protein.

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.

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

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

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

In this learning activity you'll explore a step-by-step process to solve simple free-body diagrams. They identify forces acting in the x or y direction in interactive exercises.

In this learning activity you'll examine force, mass, and acceleration to understand this "Law of Acceleration."

In this interactive and animated object, learners read a description of the number, name, and function of the cranial nerves. A matching quiz completes the activity.

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 animated and interactive object, learners examine ventilation, external and internal respiration, and gas transport.

In this interactive object, learners read the definitions of the parts of a cell and assemble a basic eukaryotic cell in a drag and drop exercise. A matching quiz involving cell terms and their definitions completes the activity.

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 interactive object, learners examine the locations of major body cavities and their protective membranes. A drag-and-drop exercise completes the activity.