The Best Earth Day Sites - Larry Ferlazzo

Best Lessons on Earth (Day) - Education World

Celebrate Earth Day - Scholastic's Caring for the Environment

Celebrate Earth Day - Scholastic's earth friendly, fun activities

Earth Day - Education World

Earth Day Activities - DLTK's Crafts for Kids

Earth Day Resource Guide - Hot Chalk

Earth Day: TeachersFirst Editors' Choices - hand selected "to engage and involve your students in both the understanding of scientific concepts surrounding Earth Day and in environmental activism for any time of year."

Environmental Jeopardy - Earth Day Network

Think Green - Discovery Education

Think Green, Teach Green - abcteach

ZeroFootprint Kids Calculator - "The Zerofootprint Calculator is a customizable tool to calculate your footprint in land, water and carbon impacts - what gets measured, gets managed."