The glass puzzle
Chris Brodien-Jones
The glass puzzle
Age Rating, Reading Level & Content Guide
by Chris Brodien-Jones
The text is written at a 7th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is mild with minimal sensitive material.
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About This Book
What if a dusty old glass puzzle could open a door to the past? Imagine spending your summer in a sleepy Welsh town, only to unlock ancient secrets that could change everything. Zoé and Ian are about to discover that some mysteries are more dangerous than they ever imagined.
Quick Assessment
This middle-grade adventure follows cousins Zoé and Ian as they spend a summer in Wales and accidentally unlock supernatural forces through an old glass puzzle. The story blends history, time travel, and family bonds, making it suitable for readers aged 9-12 who enjoy mysteries with a fantastical twist. There is mild suspense and supernatural elements, but no intense violence or mature content.
Why we rated The glass puzzle 12LE
The glass puzzle is written at a Level 7 reading level across 336 pages. Strong independent readers around grade 8.0 can typically handle this book on their own; with parent or teacher support, The glass puzzle works for readers up to grade 9.0.
We rate The glass puzzle as 12LE ("Light — Emotional") 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 glass puzzle explores supernatural, adventure, family, history, and time travel — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Kids drawn to stories about supernatural, adventure, family.
Maybe not for
- ! Readers whose emotional readiness lags behind their decoding skills — this book's intensity outruns its reading level, a classic "gifted kid" mismatch.
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
12LE — Light — EmotionalLight 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
3/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 9780385742979
- Pages
- 336
- Publisher
- Delacorte Books for Young Readers
- Published
- 2013
- Type
- Fiction