Could have the kids do this, upload to Edmodo, and then include a write-up explaining the different phases. Hands On Science: Phases of the Moon Activities for Kids - Inspire Creativity, Reduce Chaos & Encourage Learning with Kids
Here's my example for the moon page (the idea came from my fabulous teaching partner). I have them glue beans down and then cover the beans with a circle of aluminum foil to make the bumpy surface of the moon. You can grab the sentence pages here.
Simple Science Experiment for Kids: Why are there craters on the moon