Wow!! I always love this unit and project. We have been working on living and non-living things, what they need, and how they grow. One week ago we "planted" seeds to watch how the roots start to grow. We definitely needed to talk about why we were putting them on the paper towel and not in dirt. Once the kids understood that if the seeds were in the dirt, we would not be able to see the roots grow, they took off. And look, they grew!! Time to find a cup with some dirt.