Students will investigate rollercoaster motion through a demonstration and rapid-build challenge, then use initial test evidence and peer feedback to define expectations for their final marble rollercoaster.

Students will compare multiple rollercoaster concepts, select a design using measurable criteria, and build and test a paper or cardboard prototype. They will graph performance data, exchange evidence-based feedback, revise the track, and complete a midway gallery-walk reflection.

Students will demonstrate, explain, and evaluate their completed marble rollercoasters at a design expo, then submit an individual reflection supported by test data and peer feedback.