Klamath High Schools 16th annual cardboard boat races 6-05-2017

Klamath Cardboard Boat Races

Birmingham students use math to build cardboard boats for extra credit

2016 World Championship Cardboard Boat Races

Sink or swim: Students compete in annual cardboard races

2016 World Championship Cardboard Boat Races

Sink or swim: Students compete in annual cardboard races

Cardboard Boat Regatta

2016 World Championship Cardboard Boat Races

Klamath Cardboard Boat Races

Klamath High Schools 16th annual cardboard boat races 6-05-2017

Klamath Cardboard Boat Races

The Great Cardboard Boat Regatta 2017 - Crawford County Now

Weekend Glance: Get ready for school; cardboard boat races in

Klamath Cardboard Boat Races

Middle schoolers building life-size cardboard boats for ultimate