Take the ‘Catapult Challenge!’ Castles were made to defend the Welsh from attack. You are engineers and your mission is to design and make a catapult to attack them. You could make an accurate catapult to hit a specific target or build the fastest catapult to destroy a castle wall in the quickest time? You could construct a catapult that launches objects the furthest.
Design the most unusual catapult with features never before seen.* Make a prototype - using Lego or K-nex.