Students make observations and analyze data to investigate how the duration of daylight changes throughout a year. They consider their own experiences in addition to evidence gathered from videos, data tables, and a line graph to describe the pattern in the changing duration of daylight from January to December.

The associated lesson plan Investigating Daylight Throughout a Year provides more support for teachers and students, including handouts and materials for diverse learners, as well as information for customizing the data to your location.