6th Grade Science in English Ms. Martin Agenda: May 18, 2017 2nd Semester Objective: To be able to come up with a catapult or trebuchet design. First: Notes: the basic elements of a catapult or trebuchet. Next: Video Examples Get into groups, brainstorm, list materials and assign who will bring the different materials in. Then: Last: Class discussion on materials for the basic catapult/trebuchet materials.
Trebuchet and Catapult Basic Parts Lever arm Fulcrum Load Counterweight Attachments Locking mechanism
Trebuchets use a string to hold the load. Catapults use a spoon or bucket to hold the load.
Xpult: https://www.youtube.com/watch?v=_jEU6KwenIk Mini Da Vinci: https://www.youtube.com/watch?v=FHgiYh8aSlU Paper Trebuchet: https://www.youtube.com/watch?v=1NzrokQejzw Popsicle Stick Catapults: https://www.youtube.com/watch?v=WpLFC_SOpXs Pencil base Catapult: https://www.youtube.com/watch?v=eF-vSzrscUw
Box Catapult
Lego Catapults
Xpult CD Catapult Clamp 3 wooden rulers or slats (1 shorter, 2 with holes in them) A CD Rubber bands Chopsticks (2-3 pairs) Something to act as a pin
Bottle Catapult
Paper Trebuchet
Popsicle Sticks and Rubber Band Catapults 3 rubber bands 1 bucket (bottle cap) Double sided tape or glue 11 popsicle sticks 16 rubber bands 1 bucket (bottle cap) Double sided tape or glue
ADLC Digital overview of catapults and trebuchets: https://www.youtube.com/watch?v=egZhg7v4NRs