Learners examine the function of each part of a microscope and follow step-by-step instructions on how to focus on a specimen. They also review the proper use and care of a microscope and test their knowledge in two drag-and-drop exercises.

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

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

Learners test their spelling ability by identifying misspelled words from lists of words commonly used in business.