If you are looking for ideas on Earth Day-Check out these links!
Make your own Earth Day bingo cards: http://www.dltk-cards.com/bingo/index.htm
Create your own printable Earth Day dominoes: http://www.dltk-cards.com/dominos/index.htm
Make your own Earth Day concentration cards: http://www.dltk-cards.com/memory/index.htm
Lastly, a Pinterest board with lots of ideas: http://pinterest.com/tiffanymoore2/earth-day-kids-activities/