The scientific issue of carbon-14 dating and exponential decay gets a statistics-based treatment in this problem. The class starts with a basic investigation of carbon content, but then branches out to questions of accuracy and...

Transform your class into young geologists as they learn about six different branches of geology. Using the included geology career descriptions and picture cards, learners work in small groups deciding which tools and locations fit...

Climate affects populations in different ways. Scholars research extinct organisms and mass extinctions in part three of the 10-installment Discover Your Changing World series. They create graphic organizers, then fill in the...

What is biogas and how is it made? After examining background information about the sources of biogas and biogas generators, class members follow the provided information and build a biogas generator that can be used in the...