There are plenty of pictures of pumpkins that have had the pi symbol carved into them; this one is special, because if you turn the poster upside-down, it's got a quirky little grin, and the stem is like a goatee.

In my classroom, the poster stays right-side-up for about half of the year, and then someone (sometimes it's me, some years it's a student) flips it upside-down so we see the face instead of the pi symbol.

To download a high-resolution copy of this image to print and hang in your own classroom, click here:


High Resolution Pumpkin Pi Poster