As a small thank you, wed like to offer you a $30 gift card (valid at GoNift.com). Popsicle Stick Catapult Ideas for Kids STEM Activity. Sharp Scissors or a Knife 6. For any other use, please contact Science Buddies. Enjoy! Explore our digital archive back to 1845, including articles by more than 150 Nobel Prize winners. Reinforce the connections with glue/tape and some extra popsicle stick pieces if necessary so they remain standing on their own. If you like, you can tie the string holding the sling to the trebuchet directly to the hook and tie the other end to a loop of thin wire to make it easier to slide off the hook when launching the projectile. Sharp Scissors or a Knife Washers popsicle stick trebuchet krefetz com. Storm the Castle. Build a DIY Potato Cannon: PVC Spud Gun Instructions. Step 5: SWE's Ongoing Work for Intentional Inclusion >, Hands-On Engineering Activity: Build A Mini Trebuchet, Piece of corrugated cardboard, about one foot by one foot, Glue (a hot glue gun is best if available but use caution and adult assistance when using hot glue.). This will give the structure a firm base. Then, making sure no people, animals or breakable objects are nearby, let go. If you find the trebuchets sling too awkward to bother with, you can replace the sling and its hook with a scoop-shaped bucket. Step 7: As the arm swings, the sling holding the eraser slides off the hook and the eraser's kinetic energy causes it to fly through the air as a projectile. Any sort of Projectile (I used polo :P) 10. You want the trebuchet to be fairly narrow to ensure that it throws its projectiles in a straight line. Thanks.". If you made the long base pieces 1 foot (30 cm) long, they would be 10 to 12 inches (24 to 30 cm) long. When the auto-complete results are available, use the up and down arrows to review and Enter to select. This cookie is set by GDPR Cookie Consent plugin. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/2d\/Build-a-Trebuchet-Step-1Bullet1.jpg\/v4-460px-Build-a-Trebuchet-Step-1Bullet1.jpg","bigUrl":"\/images\/thumb\/2\/2d\/Build-a-Trebuchet-Step-1Bullet1.jpg\/aid4325264-v4-728px-Build-a-Trebuchet-Step-1Bullet1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"