Mini catapult... this could be something really fun to make for a lesson that is a collaboration with a history class. Students could make this one, then take what they learned to design a different one! This definitely promotes students' skills in analyzing, problem-solving, and collaboration with each other!
26 Inexpensive DIY Upgrades That Will Add A Touch Of Class To Your Home
Builder Pros. 8 X 6 Duct Reducer-Ductwork-Heating Duct-Air Duct-Ventilation Fittings by SMK. 8 X 6 Duct Reducer-Ductwork-Heating Duct-Air Duct-Ventilation to 6 8 Inch to 6 Inch Duct Reducer Duct Increaser.;No Crimp round duct reducer.;She