Earth Day is an international day that is celebrated on 22nd April each year, and has been since 1970. The celebration of Earth Day began in the United States in 1970 and was the idea of Senator Gaylord Nelson, who wanted to "put the environment into the political 'limelight' once and for all".
What can you do to celebrate Earth Day?
Here are some links from some of my favourite blogs:
No Time For Flashcards has lots of brilliant ideas: Nature Activities, Earth Day Muffins, Earth Day Craft, Letter of the Week - Earth Day
Simple Kids have some nature challenges: Discussing Nature Challenge #1: Naming Nature, and Connecting with Nature: Challenge #2 (and others besides!)
Easy Preschool give some lesson plans
Other things: look at how electicity is made, sort out rubbish for recycling, make a bird box, think about how much electricity do you use? (could you use less?), make a wormery, plant a tree, do a litter pick or walk to school.
Let me know what you've been doing - and feel free to add links to other Earth Day Activities in the comments!