This STEM challenge has students hands on constructing a water slide. The goal of the challenge is to create a water slide that takes the longest time to make it down to the bottom. Because everybody wants a ride to last longer! Students will be sending down a raft or sponge to test their slide. Students will time it and reflect on their design. Then students will make an improvement and retest it. I helped students when adding water to slide. I filled up a cup and carefully poured it down the slide to minimize the mess. I hope your students enjoy this creative STEM challenge as much as mine did!