The day started with the grinding of chalk into water and the question: "How much chalk would I need to make this mixture solid?"
Which reminded me of Goop.
Ah goop. Noor was first introduced to this marvelous substance a few years ago by the parents' of her now best friend. I believe they made a tub of it that was large enough to stand in. We didn't go that large-scale, but Noor went through two boxes of cornstarch in a flash.
1 Cup cornstarch
1/2 water with a few drops of food coloring--add slowly to the cornstarch and stir.
We talked about states of matter, atoms and molecules and about how cornstarch, which is made of loooong chains of molecules is a polymer. Goop acts like a solid when it is pressed together in your palm because the molecules are really close together--the chains get entangled. If you relax your grip on the goop, it flows like a liquid because the chains of molecules have space to move around each other.
Noor added more and less water to subsequent batches, made some inside a plastic bottle and experimented with how shaking and pouring effected the suspension.
It was clear she was working through a deeper understanding of the states of matter when later that evening, she told me that ghost are a gas. "Why," I asked. "Because their molecules are really far apart, which is why they can pass through walls."
Sunday, October 31, 2010
Friday, October 22, 2010
It was vaccination day at the pediatrician's yesterday and this morning Noor asked how far her muscle was below her skin, because it is her muscle that hurts at the vaccine site and not the skin itself.
She decided, after we looked at some images and did a bit of reading, that she could see what was going on inside her arm by poking various pieces of skinned fruit.
Tuesday, October 5, 2010
Sunday, October 3, 2010
Noor and her best bud spent the day in a private class at the Iron Hill Museum, which is housed in a one-room schoolhouse that was the "
Noor and Roman were treated to a tour of the museum and then they settled in to talk about the geology and geography of the area. A trip to the old mine provided the opportunity to identify jasper and quartz.