Wildlife Spotting

Here is a link to my mission on Leaves which you might find useful in helping you identify your leaf. http://www.projectnoah.org/missions/10081407

I love the shadow showing the pattern of the leaf margin.

On a simpler note, I would suspect this might be Beech.

Wonderful to see you trying out a new way to teach. Isn't it awesome your students can do some meaningful work here as citizen scientists? Keys for quick and easy effective submissions for you and your students: take a close up of a key part (you did that here), take a picture of the whole in its environment, and include estimated sizes in the description. The more you/they describe, the better. A little time on here and you'll have those kids really learning to think and observe like scientists. Kudos to you!

Minimal facts for me to help you ID a leaf is to include a size of the leaf, an image of both sides, a description of the feel (smooth, fuzzy, rough), the arrangement on the tree (alternate or opposite). Here is a publication that your state uses for Tree ID and it includes a leaf key. this will give you a better idea of the facts you need to include. http://www.tn.gov/twra/pdfs/treeidguide.pdf