Crater formation was fun to play with, being able to see the pebbles hit the flour to make the crater was so intriguing. The video was a great visual tool for the set up of the activity along with good facts about the moon. I did not have marbles at home, so instead I went into the yard to look for different sized pebbles, they work best if they are somewhat round. If flour isn’t available to use, I also tried using very find sand which created the craters but there wasn’t a poof of the fine powdering of dust and a shift of the medium. Other materials that could work would be baking soda and hot chocolate powder which could create the same effect. Also, Coffee grounds can be obtained for free at a local coffee shop upon request.