One of the experiments in the kids' Energy unit in Moving Beyond the Page was building a calorimeter and calculating the calories in several different bitze size pieces of food. The kids really enjoyed this. Joseph decided that you could have a campfire with the flames that a cashew puts out. ;)
Can you see the flames through the openings in the bottom of the spaghettio can? If you look closely on the frame of the balance, you can also see the smoke.
Oh, Cashews were the highest calorie food we did and, contrary to what the kids hypothesized, chocolate chips and marshmallows were the lowest calorie.
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