Having pumpkins in the classroom is not only rich for making pumpkin soup, doing pumpkin math, but also for watching the natural process of decomposition. Pumpkins will always rot! To set up this experience for success, choose a pumpkin that has been bumped or bruised. Rotting will start at these spots and progress from there. Following show photos of our pumpkins rotting. The children documented this process by making scientific drawings several times throughout the process.