![]() For older kids, you can also go into how to determine the angles and height of the tetrahedron. You can introduce or review the vocabularies base, corner, edge, vertex, and even talk about the faces of the tetrahedron. This marshmallow catapult is a great opportunity to teach your kid about triangles and tetrahedrons. You can also stiffen up the marshmallows before constructing the catapult by leaving them out of the bag. ![]() Leaving the catapult overnight should do the trick. After all, it’s being held together by soft, fluffy marshmallows! For younger kids, I recommend waiting to play with the catapult until the marshmallows stiffen up. One thing you might notice is that you need to be gentle with the marshmallow catapult.
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