Catapult Challenge
Build it. Test it. Let it fly.
Build a tabletop catapult from the kit, then launch a ping-pong ball for distance and accuracy. No experience needed.
- Date
- Saturday, October 17, 2026
- Also testing Fri, Oct 16
- Who
- Grades 4–12
- Teams of 1–4
- Included
- Free registration · Free kits available
Try one. Try them all.
2026–27- Saturday
October 17, 2026
Catapult Challenge
Build a miniature catapult, then put your engineering skills to the test in accuracy and distance challenges.
Registration open · closes Fri, Oct 9
Event in 35 days · closes in 27
- Saturday
November 14, 2026
Bridge Challenge
Build a balsa-wood bridge and test it under increasing weight. The strongest design for its weight wins.
Registration opens Mon, Oct 19
Opens in 37 days · event in 63
- Saturday
January 30, 2027
Robotics Challenge
Design and build a working electronic device with an Arduino kit. Bring your invention to life and show the judges how it works.
Registration opens Fri, Nov 13
Opens in 62 days · event in 140
- Sunday
June 6, 2027
Rocket Challenge
Launch a model rocket carrying an eggstronaut. Engineer its flight and parachute landing to bring your fragile passenger home safely.
Registration opens Fri, Apr 23
Opens in 223 days · event in 267
No experience needed.
Teachers, coaches, parents and after-school clubs can all register a team. Participation is free and kits are provided at no cost, while they last.
- Register a teamAny teacher, coach or parent can sign up online.
- Pick up your kitFree kits are ready at the MOST front desk.
- Design and buildWork as a team to plan, build and test.
- Test, compete, presentCompete at the event and present what you built.Register a team
Hear about it first.
One email when registration opens for the challenges you pick. Nothing else.