In class we learned how 3D cubes worked whew also had to build one I made one out of toothpicks and marshmallows. To keep it more sturdy I added trusses the trusses hold it up so that it wont collapse. After that I started to add books on it to see how strong it was. After I book three books on it the cube collapsed. I think if I had used more stable objectS the cube wouldn’t of collapsed so easily.