Can you catch the same cold twice? Elementary and middle schoolers learn about what happens when a virus attacks their bodies, and how the immune system never forgets a virus, with an entertaining comic book. The packet includes...

Here is a great textbook chapter on China's establishment as a communist state in 1949 and the effects of World War II on the nation. The first page prompts learners to complete a timeline activity as they read the material,...

Describes four different kinds of fossils and how they form.

The History Guide looks at the effect of the printing press on the economic improvements and spread of knowledge made possible by the printing press.