Why do we need freshwater? Because freshwater sustains life. After reading a three-paragraph passage about the importance of freshwater, first graders respond to the article by answering comprehension questions. The resource includes...

Ever heard of a stygofauna or a stygobite? How about an anchialine cave? Set your young biologists on a quest to find information about organisms that live in and have adapted to life in caves located near the water. Class members then...