The invention of magnifiers that allow us to see things that are otherwise invisible to us has revolutionized science. In this instructional activity, young scholars use several types of magnifiers to investigate magnification, and...

For this activity, students analyze a child's symptoms to determine whether she has a cold, the flu, strep throat, or a nasal allergy. They also learn the differences between viruses and bacteria. The lesson and a set of PowerPoint...

Students read an article about how the HIV virus replicates itself in a host cell, and the parts of an HIV particle. Includes labeled drawings of an HIV particle and of its replication cycle. The lesson plan materials and a set of...

After reading an article about how the spread of HIV/AIDS was first tracked, students act as epidemiologists to map its spread round the world. The lesson materials and a set of PowerPoint slides can be downloaded.