Two weeks ago we transplanted seeds and sprouts from our pumpkin into various plastic cups. We have been taking turns watering the sprouts each day and making sure they are in direct sunlight. To our surprise, the sprouts have grown a lot, one has even begun to grow leaves!
We had a great class discussion; some of us wondered if they would eventually grow into pumpkins. We talked about transplanting the sprouts again because they might need a bigger pot to grow.
But, our most rich discussion was about roots. We noticed that there were long, white roots growing deep in the soil. Someone said that plants need roots to suck up water. We wondered why roots were so big and compared them to the roots of a tree. We decided that plants need a lot of water to survive - the bigger the plant, the more water and roots it needs to live.