Nature Journal Entry With Leaf Rubbings Might be fun to give each child a page to create a nature rubbings book for the classroom. Or, it might be fun to do rubbings and have a basket of laminated leaves and bark and flowers to match up to the rubbings.
This tree identification guide is so lovely, it's almost better than a real tree. There's a version for birds, too. I'm thinking "Santa" will get these for my stocking this year. (Tree Fandex by Lee Valley.)