Do your students know what a chasm is? This STEM Challenge is perfect for learning new things and solving a unique dilemma with engineering skills! Rescue me! Are you humming a song after reading those two words? I always do! My students love a good rescue challenge, and this one started with a book I read. It was an adult book, which I will link at the end, but it gave me an idea for a new STEM challenge. We had already tried rescues that involved cranking systems to lift someone from a canyon. This time, I wanted something different. What if a team was stranded across a deep canyon and needed supplies? How could students get those supplies safely across? Aha! Crossing a Chasm was born! The Set-Up for Crossing a Chasm Before students ever get started on this challenge you need a canyon for their rescue team to use. I set up two lab stools and tied a