This activity is called Cup Stacking (it is also often called Speed Stacking). The object is to take the cups off of a single stack and set them up in pyramids (of 3 or 5 usually) and then take the stacks down as fast as you can. In this video the kids are also building designs using their stacking cups.
There are "Speed Stacking" competitions all over the world and "Sport Stacking" has an official international organization. See http://www.speedstacks.com/ for more info.
they probably got them a while back
mcolianni 2 years ago
you were there. I speed stack and I'm really fast. How is the camp. Is it fun because I'm going next year?
mcolianni 2 years ago
I am going to Camp Tecumseh and I speed stack. I'll bring my sets.
mcolianni 2 years ago
how did you get those colors? i want golds so bad lol nice video please check out my channel
sk8ingcubingstackerx 2 years ago
this was sooooo fun!
kekpk 2 years ago