• Pumpkin Circle: The Story of a Garden by George Levenson contains a good series of photographs chronicling the decomposition of a pumpkin.
• Pumpkin Jack by Will Hubbell tells the story of a boy who watches his jack-o’-lantern rot away after Halloween and leave behind seeds that sprout the next spring and grow into new pumpkins, one of which the boy carves into a new jack-o’-lantern.
I have always found that pairing books with any teaching activity really enhances the learning. You are able to read the books multiple times and every time you read your child will pick up new information. It also give another opportunity for both you and your child to ask and answer questions.
Image source: Jeremy Seitz