STEM Field Day Challenge | End of Year STEM Stations & Team Building Gr 4-8 Make the last weeks of school exciting, purposeful, and unforgettable with this STEM Field Day Challenge for Grades 4-8. This high-energy end of year STEM activity combines 8 hands-on STEM stations, teamwork, problem solving, engineering design, and friendly competition into one engaging event pack your students will love. If you are looking for a meaningful end of year team building activity, a fun STEM field day,