Catapults, trebuchet, onager, mangonel, ballista
Science Max: Experiments At Large | Pumpkins And Catapults | Akili Kids!
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2 catapults out of popsicle sticks
All About Catapults | History of Castles for Kids | Hands-On Education
The TRUTH about medieval CATAPULTS
Catapult - Introduction
Medieval Engineering | How Trebuchets Work
Mangonel Siege Artillery - Battle Castle with Dan Snow
catapults
The Physics of "Punkin Chunkin"
Reviewing Top 10 Popsicle Catapults
Giant Hybrid Torsion Catapult
Types of Catapults @ RIT 2012
How to Build a Trebuchet | MythBusters
catapults (short)
Accurate Catapult With Popsicle Sticks
CATAPULTS!
How To Build A Catapult For School Project
Unleashing a Medieval Trebuchet on a Wooden Palisade