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

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

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

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

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

In this interactive object, learners identify the parts of an animal cell and its organelles.

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 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.

In this animated activity, learners explore three major methods of heat transfer and practice identifying each. This is the animated version with no audio.

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

In this interactive object, learners review the major parts of the skeletal system by clicking on the correct term as each bone or joint is highlighted on a skeleton.