Bring hands-on STEM learning into your classroom with this fun Marble Run STEM Challenge activity pack! Students will design, build, test, improve, measure, and reflect on their own marble run using simple classroom or household materials such as cardboard tubes, cups, paper strips, tape, craft sticks, and marbles. This printable resource encourages students to think like engineers as they plan their design, build a working marble run, test the results, solve problems, and improve their creation