Sink or Float Science Rotations with an Exciting Stem Challenge This is a 5 day activity bundle that included everything you need to have fun in the classroom, while also helping your students make meaningful science connections. Day 1- Sink or Float Opener, Teacher Directed Experiment, and a student handout is provided if you'd like to use it. Students will circle if an object sinks or floats. ** I've included easy to find classroom items so you aren't searching all over for random items. **