In this month-long activity, learners/students record data about Moon phases on a data sheet over the course of one complete Moon cycle (approximately 28 days). This log can be modified to also include Moonrise and Moonset data if desired. A brief discussion about this data can occur on most days of the unit. The data will be used to allow learners/students to build a model to account for the phenomenon of Moon phases. Topics include moon phases, moon cycle, moonrise, moonset, day/night, eclipses, and seasons.