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Book
Paperback • 96 Pages
Grades 2–3
$12.99
Lesson Plans
61 Pages • 24 Activities
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Award-Winning Book!
2026 Best in STEM™ Honoree!
STEM.org Educational Research
STEM.org Reviewed™ Educational Media
Winner of two 2026 Writely Awards!
Teacher's Pick (ages 4-9)
Best Series or Box Set (ages 4-9)
Book It With Dad Video Review
Charli's Dorsal Device
An Engineering Adventure
(Charli Explores STEM® #3)
What if one smart invention could help an animal return home?
Follow Charli as her curiosity leads her into the exciting world of engineering and innovation.
When Charli meets an engineer and learns how technology can help animals in need, she can’t stop wondering what it would be like to design something that truly makes a difference. Her imagination sparks when she learns about a rescued dolphin that needs help returning safely to the ocean. But the challenge is complex. The device must work underwater, stay secure, and protect the dolphin’s well-being.
As imagination turns into action, Charli steps into the role of an engineer—testing ideas, learning from mistakes, and improving her design through perseverance and teamwork. She soon discovers that engineering isn’t about getting everything right the first time, but about problem-solving, creativity, and determination.
With Charli’s help, readers explore:
• Engineering and STEM careers
• Design thinking and problem-solving
• How technology can help protect marine animals
• The importance of testing, failure, and redesign
• Confidence, resilience, and collaboration
Perfect for readers ages 6–9, this engaging chapter book encourages curiosity, critical thinking, and early interest in engineering and STEM careers.
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Industry Reviews
"The diverse cast of girls effectively encourages participation in STEM—the female mentors in the book are all positive and successful in jobs they love. . . A rousing story that shows girls getting excited about STEM. Our Verdict GET IT."--Kirkus Reviews
"Best of all, the story celebrates problem-solving as a key part of science, showing the steps Charli uses to overcome design problems as they occur in real time—and how rewarding it is when she finds the solutions! Inspiring and informative, Charli’s Dorsal Device is a fantastic new addition to the series."—The Children's Book Review
"With a focus on curiosity, persistence, and creativity, Charli’s Dorsal Device is an uplifting book that will inspire children to dream often and dream big."—Indies Today
"It would be great for early elementary readers, classrooms doing STEM units, or any family that wants to nudge their kids, especially girls, toward science and engineering without it feeling like a lecture."--The Literary Titan
Book Details
ISBN: 978-1964845074
Format: Paperback
Pages: 96
Size: 5.5" x7.25"
Grades: 2-3
Language: English
Publisher: Emmolly Books




