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Are you worried to present your homemade STEM challenge of making catapult in a science fair event!? Without any further thinking, you can add this project to your child’s science fair activity and experience the wow twist in your child’s STEM challenge activity. Not only it works effectively as a STEM activity but also works great to learn simple physics. Let us begin with some STEM challenge activities for kids that allow them to create homemade mini catapults in an excellent way.
Build a Catapult out of Dowel Rods and Rubber Bands
This was before guns or cannons, so you can imagine the challenge of getting through walls. Many of the weapons available were the same ones used by ancient armies like the Greeks and Romans. Drill a 1⁄8-inch hole through the center of the long dowel about ¾ inch from the end [7]. Use the round face of the hammer to shape the washer into a cup [8].Attach the washer to the dowel (the cup's rim faces up) using the bolt, lock washer, and nut [9]. Drill pilot holes into the center of the ends of the footings; screw the wheels into place [4]. Step-by-step plans for an all-ages version of the Roman-Empire siege engine.
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Build a trebuchet catapult with Popsicle Sticks
Also, supervise the use of scissors or any cutting tools required for the project. This type of project encourages critical thinking, experimentation, and the application of knowledge to solve a problem — all essential components of STEM education. Kids use mathematical concepts to measure and cut popsicle sticks accurately.
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A catapult is a device that uses the sudden release of potential energy to launch an object a great distance. The light onager weighed about 1000 pounds and could hurl a 3- or 4-pound stone about 100 yards. The heavy onager weighed twice as much, but could hit a target 500 yards away with an 8-pound stone. It’s important to note that the distance the projectile will travel and the speed it will travel at will depend on the tension in the rubber band. The more tension in the rubber band, the more force it will exert on the throwing arm and the farther the projectile will travel.
In this post, I have included 10 different methods of making mini catapults right from your home or school. Use crafting sticks and a bottle cap to make this super simple catapult. This one actually uses a spoon rather than popsicle sticks.
Lacing the Arm
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Glue the footings to the bottom of the frame, flush with the sides and 1 inch on center from the ends [3]. Dragon Slayer Catapult is a whole story behind this simple (and large) catapult from Frugal Fun for Boys. Howie Miller is as dedicated to fatherhood as he is to life long learning. Musician, Photographer, Educator, Consultant, Entrepreneur, Blogger, and founder of STEMtropolis, where you can share his adventures in STEM and STEAM with his family.
It’s not only a chance to make something unique but also an opportunity to learn and apply basic principles of physics. Our steps are detailed, clearly outlined, and perfect for crafting enthusiasts at any skill level. My Silly Squirts guides you through constructing a DIY popsicle stick catapult that promises to be a hit with the kids. With a few jumbo popsicle sticks, rubber bands, paper shot cups, mini pretzel balls, and a hot glue gun, you can assemble an entertaining launcher in just a few easy steps. As they tweak their creations for optimal launching performance, they’ll intuitively learn about potential and kinetic energy.
Test different configurations, explore how variables affect launch distance, and inspire young minds with this playful learning experience. Keep it enjoyable and educational as you guide your kids through building and customizing their very own popsicle stick catapult. Ready to engage your kids in a fun and educational activity?
As versatile as they are, you can create a few different designs with different launch mechanisms. We’ll show you how we built ours, and you can follow along as best as you can with what you have. You may need to put on your engineering hat and improvise, depending on what bricks you have on hand. The optimal size and shape of a catapult can be determined by considering the weight and size of the projectile it will launch. Factors such as the angle of launch, force of the launch, and distance of the launch should also be taken into account.
You can talk about stored energy or potential elastic energy as you pull back on the Popsicle stick, bending it. When you release the stick, all that potential energy is released into energy in motion producing the projectile motion. When you pull down the lever arm all that potential energy gets stored up! Release it and that potential energy gradually changes over to kinetic energy. Gravity also does its part as it pulls the object back down to the ground.
I remember when the kids were little how in awe they were when they learned you could take a plastic spoon place something in the holder and watch it shoot across the room. Of course, I had to remind them that launching chicken nuggets at their brother was not the way to test accuracy and precision. Again this is a brilliant easy engineering project for kids with lots of possible variations on the design and theme. For your mini catapult, you’ll want to consider objects that are generally round, light enough that your catapult can toss them, but not so light that you can't predict their flight. What properties allow one catapult to launch further (or higher) than the others. The simplest design is a lever system for the launch mechanism.
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