Book Series · 4 Books

Flat Stanley's Adventures in Classroom 2E Books

In order from Class Pet Surprise to Flat Stanley's Adventures in Classroom 2E #3: The 100th Day: A Fun STEM Adventure About Problem-Solving and Numbers for Kids. Part of Flat Stanley.

The Flat Stanley's Adventures in Classroom 2E series is a set of 4 chapter books by Jeff Brown and Kate Egan, published between 2023 and 2025. Written for ages 4–10, most books run about 130 pages.

Flat Stanley's Adventures in Classroom 2E #3: The 100th Day: A Fun STEM Adventure About Problem-Solving and Numbers for Kids

About the series

What's Flat Stanley's Adventures in Classroom 2E About?

Four STEM-focused chapter books set in Stanley's second-grade classroom, each with an experiment, activity, or recipe.

Where the story begins

First Book in the Series

Sale price

$674

Book #1 · Chapter Book · Ages 6–10 · 2023

Class Pet Surprise

By Jeff Brown, Kate Egan, Nadja Sarell (Illustrator)

A class pet escapes, sparking a STEM adventure to recapture it.

128 pages

$6.99Save 4%

Paperback

Summary: Stanley Lambchop, flattened by a bulletin board, faces a new challenge when his class pet hamster, Cottonball, escapes. With his best friend Marco, Stanley must navigate disagreements and engineering hurdles to recapture the elusive pet. Can they work together to solve the mystery and prevent future escapes? Join Stanley in this STEM-filled adventure, where creativity and teamwork are key.

In reading order

Flat Stanley's Adventures in Classroom 2E Series

4 books · Published 2023–2025

#1 in Series

Sale price

$674

Class Pet Surprise

Chapter Book · Ages 6–10 · 2023

A class pet escapes, sparking a STEM adventure to recapture it.

#4 in Series

Sale price

$1597

The Great Robot Race

Chapter Book · Ages 4–8 · 2025

Can Stanley and Marco win the robot race without breaking the rules?

Series

Sale price

$1697

Riding the Slides

Chapter Book · Ages 6–10 · 2023

Can Stanley prove his flatness isn't cheating in playground games?

Series

Sale price

$574

Flat Stanley's Adventures in Classroom 2E #3: The 100th Day: A Fun STEM Adventure About Problem-Solving and Numbers for Kids

Chapter Book · Ages 6–10 · 2024

Stanley must solve a math puzzle to bring the perfect treat to a school celebration.

Good to know

Common Questions

How many books are in the Flat Stanley's Adventures in Classroom 2E series?

There are 4 books in the Flat Stanley's Adventures in Classroom 2E series. It began with Class Pet Surprise in 2023, and the newest book, The Great Robot Race, was published in 2025.