Each group needs:

• activity worksheets:
• Trebuchet Supply Order
• Instruction Manual Rubric
• Trebuchet and Quadratics Data Collection Sheet
• PowerPoint Presentation Rubric
• $45 to purchase materials from a hardware store
• safety goggles, one per student
• camera or smartphone with slow-motion video capability (most iPhone and Android phones come with this feature)
• large graph paper pad, available online
• computer with Google SketchUp software; free download at https://www.sketchup.com/
• tennis ball
• cardboard box used to hold copy paper, usually 38 cm x 30 cm x 25 cm (15 in. x 12 in. x 10 in.)
• use this box as packaging for trebuchet pieces

To share with the entire class:

• Punkin’ Chunkin’ competition videos (there are a number of free videos available to watch on YouTube that show completed versions of various types of siege engines)
• rulers
• building tools and access to a hacksaw, drill, and miter saw
• Note: there are “how-to” videos on YouTube that you can use to help teach yourself and your students how to use the hacksaw, drill, or miter saw; or consult with your industrial arts or shop class program