We finished up the last week of school before vacation with a little sceince. This week's episode--the mystery of molecules. We made a whole bunch of molecules out of marshmallows and toothpicks. This was totally cool. When Daddy came home, he offered a couple of mysterious comments about the project. First, he asked me about "covalent bonds" (which I have no clue what he's talking about). Then something a bit more delicious--he observed that the hydrogen atoms never link to each other and never link to more than one other atom. I hadn't noticed this, but it's interesting.