You should have 20 matching pumpkins. Glue 10 of them to the inside of a file folder. Glue an envelope or plastic baggie to the back of the folder and place the matching 10 in the envelope. This becomes a matching game for the children helping them learn their numbers. You can also use real pumpkin seeds and they have to place the correct amount on each pumpkin.
Sandwich leaves of the same size and variety between two pieces of clear contact paper.
Set the board and leaves on a tray. The children match the leaves. Select leaves from nearby trees. Collect a large and small leaf from each tree. Press the leaves between two large books to flatten them.