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

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

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

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

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

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

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

Students identify the parts of a triple beam balance and practice measuring the mass of objects.

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 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.

The student identifies the anatomical parts of the ear and learns the purpose and function of these parts. A review follows the lesson.

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.