Almost half of all known fish species call ponds, lakes, rivers, and other freshwater habitats home. Learn about freshwater fish in this worksheet.

Our ecosystems need a protector; is your third grader up to the challenge? Identify harmful pollutants in a science worksheet that doubles as a coloring page.

Get to know some of the friendly, furry, feathery river wildlife that live near American rivers, then match each one to its home.

Learn all about rivers--how they were formed, what they're made of, and what they do for us and the planet--in this reading and science worksheet.

Get to know the platypus with this fill-in-the-blank activity for kindergarteners and first graders!

This research, drawing, and writing worksheet is a fun introduction to informational and science writing.

Construct your own map with this hands-on science worksheet for second graders!