Remember our awesome two story marble run we made last year? It was just after Christmas, we had a bunch of leftover wrapping paper tubes, and we were learning about inclined planes? (We also had a lot of donated tubes, also! Thanks guys!)
Well, here is what we had come up with.
I thought we were awesome.
And then I saw THIS!
Jelle’s Marble Run for the (obvious) win.
That was so awesome. Go ahead. Watch it again. I know you kind of want to.