Learners watch video clips demonstrating the correct procedures for police officers to follow when entering and clearing a room.

Learners watch video clips demonstrating the correct procedure for police officers to follow when metering a room.

In this video learners view the valves and chambers of the heart.

Learners watch a short video showing the correct procedure for police officers to follow when making contact with a high-risk vehicle.

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

Students identify the various regions of the human body through video.

In this video, you'll review how every protein molecule of an organism is synthesized.

Learners watch a short video showing the correct procedure for police officers to follow when making a non-approach vehicle contact.

Learners watch a short video demonstrating the correct procedure for police officers to follow when approaching a motorist after stopping a vehicle.

In this video, learners view the parts of an animal cell and its organelles.

Learners view video clips showing how coiled wire provides more resistance to AC current flow than uncoiled wire.

Learners examine the seven most common barriers to effective listening and consider suggestions for how to overcome these barriers. This interactive object contains audio.

Explore what passive transport diffusion is and how it moves water through a membrane.

Learners identify negative roles, match statements characteristic of each role, and relate how they have handled negative teams.

In this learning activity you'll examine Newton's Third Law: for every action, there is an equal but opposite reaction.

Students interpret pie chart information and identify the parts of a chart in an interactive exercise.

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

Learners read about lab equipment and basic safety measures. In a quiz, they view photos and determine if the lab technicians pictured are using safe practices.

The learner views several animations to study Newton's First Law of Motion, also known as "The Law of Inertia."

Explore what passive transport osmosis is and how it moves water through a semipermeable membrane.