For those who didn't know already, buying a cow heart at the grocery store is not a cheap ticket to a great biology lesson. Turns out they just give you the parts people like to eat. No aeortas, chamber walls, nothin'. Still, five-year-old vegetarian she was, Z found it fascinating, cutting through muscle and fat with kitchen scissors and pushing blood around in the veins on the heart's exterior wall. Big discussion about blood and what it's for (review), what people eat when they eat meat (mostly muscles), the different kinds of muscles in the body, etc.

This picture would have been a lot funnier with Z in it. She was wearing her painting smock, which happens to be spattered all over with red paint, and wearing latex gloves. (Do they make those in kids' sizes?) Our dog had an excellent dinner tonight.