Did you know the surface of the Earth is always changing? Learn about the events that change Earth's surface with this crossword puzzle for second and third graders!

It's easy being green when you have our Earth Day game for a guide. Just print out this Earth Day game and get ready to score one for the planet.

Review the rock cycle with this second-, third-, and fourth-grade crossword puzzle!

Find a definition of what "natural resources" are, and complete the natural resources word search. It's a good vocabulary warm-up!

Here's a fun way for kids to review their knowledge of earth science terms. Challenge your child to give a definition of each word as he finds it.