I LOVE Earth Day. I have loaded my wiki with tons of free websites and books to celebrate Earth Day and help enrich the learning experiences of my first graders. I have also discovered this free app that is an interactive book.
I came across it on a blog that I love to follow and plan on downloading it tonight. I have not previewed it myself yet, but thought it was worth sharing!
Also check out my wiki Earth Day page http://mcisaac1w.wikispaces.com/Earth+Day