A rolling science cart with a heat lamp on top and a ruler balanced with a paper bag hung on each end. Above the cart is a white board with a drawing of the ruler and paper bags, labeled bag 1 and bag 2, and a written explanation. "1. Two bags with the same amount of air. Same air=Same Weight. 2. The heat lamp caused temperature to increase in bag 1. 3. Increased heat -> air expand -> Some air left bag. 4. Less air = less weight -> bag 1 went up"
"Ms. G, how do you memorize all that?"
"I don't memorize it. I know it."
#edusky #middleschool