This learning resource focuses on the investigation of sunlight direction and shadow measurement techniques. It guides students through a systematic approach to estimate the heights of tall objects using a meter stick and shadow lengths. The resource includes roles for students, such as Science Leader and Math Leader, each responsible for observing, measuring, and recording data. Students will explore essential questions about how the Sun's position affects shadow patterns and learn the mathematics behind proportional reasoning to calculate object heights. It concludes with discussions about seasonal variations in daylight hours and the implications of the Sun's angle.