The students individually observe the moon (phases) for about one month. They write down dates, times, how much of the moon was visible, and any other comments they have about their observations. From there, they have to write up what patterns they observed and research why these patterns occur. They also must have a visual to go along with their observations. The idea is to get them to discover that there are phases of the moon, why there are phases, and how long a revolution takes.
You can find the RubiStar rubric for this project at