Tops and Bottoms book f/u chart. Perfect for plants unit! I would add a picture next to each word for pre-k students. Making this an interactive chart using velcro would be a great hands on activity for this age group as well.
I was given a group task at uni to creat a science display on the topic of pushes and pulls. As I am specialising in early years we had to aim it at the ages of years olds. We chose to use the story of The Enormous Turnip as a stimulus.