Which activity effectively integrates patterns as a crosscutting concept in a first-grade space systems unit?

The activity that involves observing the sun, moon, and stars to predict daily and monthly events effectively integrates patterns as a crosscutting concept in a first-grade space systems unit because it directly engages students in recognizing and analyzing the repetitive and regular occurrences of celestial objects. Such observations help students understand that these objects follow specific patterns in their appearances and positions over time. By observing the movements of the sun and moon and their phases, as well as the patterns of stars in the night sky, students can make predictions about future events, such as lunar phases or seasonal changes, thereby reinforcing their understanding of scientific concepts through the lens of patterns. This hands-on approach promotes inquiry and critical thinking as students explore the natural world around them, making it a powerful educational experience in the context of space systems.