Soap-Powered Paper Boat

Boat zips forward. Ask students to predict what will happen. Float boat; touch soap at notch in rear. Key idea: Soap lowers surface tension behind the boat, creating an imbalance. Ask: What pushes the boat forward? Safety and cleanup: Fresh water each trial; clean spills. https://extension.usu.edu/buildingstrongchildren/files/BSC_Curriculum_Guide.pdf