Best Children's Intermediate Readers Books of 2026

Celebrate your uniqueness with Dr. Seuss and the Great Birthday Bird in "Happy Birthday to You!" This children's classic book is the perfect gift for Seuss fans or anyone who wants to celebrate their special day. With birthday festivities on every page, readers will learn to embrace their individuality and celebrate themselves every day of the year. The colorful illustrations and fantastical fun make this book a joy to read. The School Library Journal calls it a "festive" and "multicolored excursion." Overall, "Happy Birthday to You!" is an essential birthday gift for all ages and a wonderful way to celebrate being you!

Mystery in Rocky Mountain National Park is a thrilling adventure that takes readers on a scavenger hunt through Colorado’s Rocky Mountain National Park. The book follows Jake, Amber, and Wes as they search for hidden codes, riddles, and maps left behind by Jake’s grandfather. Along the way, they learn about survival skills, natural history, and the importance of friendship. This page-turner is perfect for young readers who love mystery adventures like the Hardy Boys and movies like National Treasure. The author’s illustrations add an extra layer of excitement to the story, making it hard to put down. Overall, Mystery in Rocky Mountain National Park is a delightful read-aloud adventure that both kids and parents will enjoy.

Adventure in Grand Canyon National Park: A Mystery Adventure (National Park Mystery Series) is a thrilling book that takes young readers on a wild scavenger hunt deep into the Grand Canyon. The story follows three friends as they uncover an ancient mystery left behind by Jake's grandfather, encountering new dangers and testing their friendship along the way. The book is filled with over fifty illustrations and is guaranteed to keep readers hooked until the very end. This installment of the National Park Mystery Series is perfect for young readers who love adventure, mystery, and the great outdoors.

The Secret Lake: A children's mystery adventure is an exciting time travel story that follows siblings Stella and Tom as they embark on a quest to solve the mystery of their elderly neighbor's lost dog. As they uncover clues, they find themselves transported back in time almost 100 years to their home and its gardens, where they make both friends and enemies and discover startling connections between the past and present. With short, gripping chapters and many twists and turns, this book is a firm favorite with both boys and girls aged 8-11. Overall, The Secret Lake is a modern children's classic that is sure to captivate young readers.

Shadow Jumper: A Mystery Adventure Book for Children and Teens Aged 10-14 by J M Forster is a thrilling read for middle-graders. The story follows Jack Phillips, who is allergic to sunlight and is confined to the shadows. When his condition worsens, he embarks on a mission to find his missing scientist dad, uncovering shocking secrets along the way. The book deals with contemporary themes such as isolation, divorce, and difficult health conditions in a relatable manner. The heartwarming message about the power of friendship to fight adversity makes it a unique and touching tale. Highly recommended for young readers.

Discovery in Great Sand Dunes National Park: A Mystery Adventure (National Park Mystery Series) is a thrilling book that follows Jake and his friends as they embark on a scavenger hunt into the rugged wilderness of the national parks. The book is filled with riddles, lost landmarks, hidden clues, and real locations that will keep the reader engaged from start to finish. The characters' friendships and integrity are tested, and they learn about survival skills, natural history, integrity, character, and friendship. The book is perfect for young readers who love mystery adventures and enchanted lands. The illustrations by the author make the book even more captivating. Overall, this book is a must-read for anyone who enjoys an exciting adventure story.

Who Would Win?: Fiercest Feuds is an exciting bind-up of five books in the popular Who Would Win? series. The action-packed animal series features ten fierce animals battling it out, including Falcon vs. Hawk, Hyena vs. Honey Badger, Komodo Dragon vs. King Cobra, Tarantula vs. Scorpion, and Whale vs. Giant Squid. The collection features a range of mammals, sea creatures, reptiles, and birds to satisfy all kinds of animal fans. The book is filled with amazing facts, illustrations, photos, and charts, and kids will learn about each animal's anatomy and behavior. Overall, this book is a great read for animal lovers and an excellent addition to any children's book collection.

This book is a collection of five of the most popular books in the Who Would Win? series, featuring a range of mammals, sea creatures, reptiles, and dinosaurs to satisfy all kinds of animal fans. Kids will learn about each animal's anatomy, behavior, and more alongside photos, charts, illustrations, and amazing facts. The book is written by award-winning author Jerry Pallotta and illustrated by Rob Bolster. Overall, the book is an exciting and educational read for children who love animals and enjoy imagining animal battles. The unique combination of interesting facts, detailed research, humor, and realistic illustrations make this book stand out from others in the genre.

The Grand Teton Stampede is an exciting addition to The Campground Kids: National Park Adventures series. The story follows Isaiah, his sister Sadie, and cousin Ethan as they explore Grand Teton National Park and stumble upon a mysterious stampede. The book is full of adventure, mystery, and teamwork as the kids work together to solve their first mystery. The book is perfect for children who love camping and the great outdoors, and it also introduces them to the beauty of national parks. The Grand Teton Stampede is a well-written, action-packed book that will keep young readers engaged until the very end.

The Math Inspectors: Story One - The Case of the Claymore Diamond is a great book for children aged 9 and up who love reading, adventure, and math. The story follows the lives of four twelve-year-olds who love solving mysteries in their hometown of Ravensburg, New York. The book is the first in a series of five, with each book offering a unique mystery for the Math Inspectors to solve. The book is not only entertaining but also educational, as it incorporates math into the plot. Overall, this book is a must-read for kids who love mystery, adventure, and math.