Sloan Museum of Discovery and Longway Planetarium staff will be here to help children aged 4-12 years old work together to investigate balanced and unbalanced forces acting on a marble as we use a variety of interesting materials to build a roller coaster that moves a marble through upside-down loops, curves, and drops. Open to children aged 4 years old or older only. We're limited to 25 kids in each session, so please register for either the 11am or the 2pm.

Children aged 12 years and under must be accompanied by a responsible caregiver (aged 16+) who remains on the premises for the duration of the program.