Book Series · 7 Books

Mr. Tiffin's Classroom Series Books

In order from How Many Seeds in a Pumpkin? to The Cookie Vote.

The Mr. Tiffin's Classroom Series series is a set of 7 picture books by Margaret McNamara, published between 2007 and 2025. Written for ages 3–8, most books run about 40 pages.

Where the story begins

First Book in the Series

Sale price

$1799

Book #1 · Picture Book · Ages 3–7 · 2007

How Many Seeds in a Pumpkin?

By Margaret McNamara, G. Brian Karas (Illustrator)

A classroom pumpkin experiment reveals surprising secrets hidden inside small things.

40 pages· 641 words· Est. 5 min read-aloud

Hardcover

Summary: In Mr. Tiffin's class, a pumpkin experiment challenges students to guess seed counts. Robert, Elinor, and Anna make bold predictions, but it's Charlie, the quietest, who discovers the smallest pumpkin holds the most seeds. This delightful tale uncovers the unexpected wonders within small things, blending math with a touch of magic. Will the students learn that size isn't everything?

The complete set

Mr. Tiffin's Classroom Series Series

7 books · Published 2007–2025

Series

Sale price

$1799

How Many Seeds in a Pumpkin?

Picture Book · Ages 3–7 · 2007

A classroom pumpkin experiment reveals surprising secrets hidden inside small things.

Series

Sale price

$1799

The Apple Orchard Riddle

Picture Book · Ages 4–8 · 2013

Students solve a riddle on a school trip to an apple orchard.

Series

Sale price

$1699

A Poem in Your Pocket

Picture Book · Ages 4–8 · 2015

A student struggles to write the perfect poem for a special day.

Series

Sale price

$1697

The Dinosaur Expert

Picture Book · Ages 4–8 · 2018

Can Kimmy prove girls can be paleontologists on a museum trip?

Series

Sale price

$1697

The Little Library

Picture Book · Ages 5–8 · 2021

A hesitant reader discovers a passion for woodworking, transforming his library experience.

Series

Sale price

$1797

The Cookie Vote

Picture Book · Ages 4–8 · 2025

Students learn how a bill becomes law, sparking a cookie debate.

Series

Sale price

$2089

The Cookie Vote

Picture Book · Ages 4–8 · 2025

Students learn democracy's sweet side when a cookie debate sparks a lesson in compromise.

Good to know

Common Questions

How many books are in the Mr. Tiffin's Classroom Series series?

There are 7 books in the Mr. Tiffin's Classroom Series series. It began with How Many Seeds in a Pumpkin? in 2007, and the newest book, The Cookie Vote, was published in 2025.