So I noticed as I wrote the title of this post that all you have to do is move the H in heart from the front to the back and you have Earth. Cool!
A Cupcake for the Teacher. I was just planning on having them color an earth and then cut a heart out of it, but then I found this awesome coloring sheet:
here.) I went through my box of 120 crayons and took out all the blue and green ones. There were so many, and each one had a different name!