Learning ALL About Pumpkins

We bought pumpkins a few days ago and my boys have been dying to carve them up. But before they could carve them I had a bunch of fun math and science projects I wanted to do with them. First I asked the boys to each estimate the height (using a ruler and a flexible tape measure), weight, circumference, number of seeds inside, the number of lines on their pumpkin, etc. I asked them to guess who's pumpkin was biggest, heaviest, fattest, had the most lines, the most seeds, etc. I recorded all their predictions and then we dug in. We began by weighing all the pumpkins on our bathroom scale. Weighing our pumpkins measuring our pumpkins We then measured, weighed, counted and saw how close we were to our estimates (but we still didn't cut anything yet so we still didn't know how many seeds). I asked them how many pumpkins would it take to equal their own weight and weighed the boys as well. Then we moved along to science. I asked them if they thought the pumpkins would sink or fl...