Having students research topics is a great way for them to learn. I find that with my solar system unit, students enjoy researching topics because there are so many fascinating things to learn about. When I begin teaching about the moon, I always do a KWL chart to start. Then I give them this research sheet so they can learn most of the important facts about the moon. Anything else they learn is a bonus. I let them use books, magazines and their computers to research.