STEM Logo word only.png

  • Project Plans

    • By Category
    • All Project Plans

  • Shop

    • Invention Kit
    • DIY Robot Kits
    • Supplies

  • Resources

    • Lesson Resources
    • Science Fair Guides

  • About

    • Our Mission
    • What's STEM?
    • Meet the Makers
    • About this Site

  • Contact

  • More

    Launchers

    Class 1 Catapult
    Bow and Arrow
    Class 3 Catapult
    Pyramid Slingshot
    Pyramid Catapult
    Trigger Launcher
    Slingshot

    Back to Projects

    STEM Logo word only small.png

    © 2021 STEM Inventions

    Leave your email here to be notified about new projects.