SDSPARKLABPerformance Expectations require students  to be able to support an argument that the apparent brightness of the sun and stars is due to their relative distances from Earth (5-ESS-1). But how do you get started in a way that engages students and keeps them from "spacing out"? Download our free Starlight and Distance SPARKlab— digital content that can easily be integrated into your lesson— to see how to get started!