Saturday: spark lab

We went to the SparkLab at the museum today.  After last rotation I had been expecting to not really go back, but we had a sneak peak of what was there this past Wednesday and they had some interesting stuff again.  I'm still not sure what I'll do when our membership is up...maybe let it lapse for a little bit and then go back?  We'll see.

Anyway, they had marble run stuff.  Isaac worked so, so hard for two hours to make his work. (And he did!)  He also found out the some marbles had a hollow inside and some had something slightly shaky inside.  One type of marble worked on his run but not the other.

Joshua stayed at the marble run the whole time to, but explored it much differently.  It started with building a run, but decayed into...random experiments I guess.