Help young scientists piece together the theory of plate tectonics with this comprehensive collection of materials. Whether your are looking for worksheets, hands-on activities, or assessments, this resource has everything...

Young historians discover the early people of the western hemisphere. The unit explores how the land changed, how it was used and homes of early Americans such as Incas, Mayans, Inuits, Aztecs, and Pueblos. Individuals also examine these...