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The Virtual Vine: Pumpkins Aplenty, Pumpkins Galore
This online lesson plan on pumpkins includes a booklist, projects, and songs, as well as many other creative activities for students.
Teachers.net
Teachers.net: Pumpkin Potpourri (Lesson Plan)
Some cute ideas on integrating a pumpkin theme into many subject areas, based on reading "Pumpkin, Pumpkin," by Jeannie Titherington. Activities include making a pumpkin story wheel, creating a mural, and making a paper pumpkin patch.