The Great Dolphin Door
Matthew Boerner
The Great Dolphin Door
Age Rating, Reading Level & Content Guide
The Adventures of Frostfin And Silverbeak
by Matthew Boerner
Illustrated by Vinya Cameron
The text is written at a 3rd grade reading level, the subject matter is intended for younger children (ages 5–8), and the content is mild with minimal sensitive material.
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About This Book
What if two dolphin friends found a magical door hidden deep in the ocean? Imagine diving through the Mystery Diamond, searching for ten secret keys that could unlock amazing surprises. But every step brings new dangers—will they find the keys before time runs out?
Themes
Quick Assessment
This early reader book follows two dolphin friends on an exciting underwater adventure as they search for ten keys to unlock the mysterious Great Dolphin Door. Suitable for ages 5-8, it combines action and marine life themes with gentle peril appropriate for young readers. The story encourages curiosity and problem-solving without intense content.
Why we rated The Great Dolphin Door 8LP
The Great Dolphin Door is written at a Level 3 reading level across 52 pages. Strong independent readers around grade 4.0 can typically handle this book on their own; with parent or teacher support, The Great Dolphin Door works for readers up to grade 5.0.
We rate The Great Dolphin Door as 8LP ("Light — Physical") because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly mild; no single dimension stands out as a concern.
No specific content flags were raised by community reviewers, which is consistent with the mild intensity score.
Thematically, The Great Dolphin Door explores adventure, animals - marine life, and friendship — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 5-8 range — the maturity and attention span match the story's pacing.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Kids drawn to stories about adventure, animals - marine life, friendship.
Maybe not for
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
8LP — Light — PhysicalLight conflict or tension. Mild peril resolved quickly.
Was our "Mild" content intensity rating accurate for this book?
Reading Insights
Hook Factor
2/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
1/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 9780977852550
- Pages
- 52
- Publisher
- Peppertree Press
- Published
- April 30, 2006
- Type
- Fiction