Fifth graders research dairy farming and learn about dairy products as well as dairy processing. For this dairy lesson, 5th graders read background information about dairy farming and processing. Students discuss running a small business...

[Free Registration/Login may be required to access all resource tools.] Learn how multicelled organisms have specialized cells that do specific jobs and single celled organisms exist without the help of other cells.

digital library project that makes freely available original works demonstrating the evolution of American medicine from colonial frontier outposts of the 17th century to research hospitals of the 20th century.