The power of a picture. During the events surrounding World War I, propaganda posters were widely distributed in American society to sway the emotions of its citizens. By analyzing World War I propaganda posters in the first installment...

Geology geniuses analyze sediment samples with a hand lens and sort according to physical characteristics. They also learn about the processes of cementation, compaction, and lithification within the rock cycle. The lesson plan is...

United States expansion into Western territories impacted much more than just lines on a map. The seventh installment of a 22-part series about America's history puts scholars into the lives of those making the journey westward as well...

Surf's up, big kahunas! How do surfers know when the big waves will appear? They use science! Over the course of five days, dive in to the inner workings of tidal waves and learn to predict sea levels with the moon as your guide.

Class members will dig this activity that has them trying their hand at recovering artifacts. Groups are assigned a section of a sandbox, carefully uncover the artifacts in their section, and then develop theories about who might...

Scholars learn what it means for a relation to be a function and see various representations of functions. After learning the definition, they participate in a card sorting activity classifying relations as functions or not.