US Environmental Protection Agency
Building an Model Aquifer
With almost half of Americans relying on groundwater supplies, it is more important than ever to protect aquifers from possible contaminants. Working in small groups, young environmentalists explore this problem as they create an aquifer...
Model Citizen Publications
How To Write a Paragraph
Instructing learners on how to craft a good paragraph, a skill required of all writers, is the focus of a 23-page packet that includes directions, graphic organizers, exercises, and worksheets for guided practice.