Reviewed by HootRated editorial · Last updated
Foundation and Earth
Isaac Asimov
Foundation and Earth
Age Rating, Reading Level & Content Guide
by Isaac Asimov
Foundation · Book 5
The text is written at a 5th grade reading level, the subject matter is intended for teens (ages 13+), and the content is mild with minimal sensitive material.
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About This Book
What if the whole planet was alive and thought as one? Golan Trevize believes this mysterious planet called Gaia holds the future of all mankind. But first, he must find Earth—if it even exists—hidden somewhere in the vast galaxy, and uncover secrets that could change everything.
Themes
Quick Assessment
This science fiction novel follows Golan Trevize, who believes a planet with a collective consciousness is humanity's future, but seeks to confirm this by finding Earth, humanity’s origin, which has become a mystery. Suitable for teens, the story explores deep philosophical questions about individuality and community within a futuristic setting. The book contains no graphic content but involves complex themes that may prompt thoughtful discussion.
Why we rated Foundation and Earth 10MT
Foundation and Earth is written at a Level 5-6 reading level with a Lexile measure of 890L across 499 pages. Strong independent readers around grade 6.5 can typically handle this book on their own; with parent or teacher support, Foundation and Earth works for readers up to grade 7.5.
We rate Foundation and Earth as 10MT ("Moderate — Thematic") because the content sits in the "Mild" range — mild conflict — the kind a child encounters in normal play and sibling life. The strongest signals come from thematic difficulty — these are the dimensions parents should evaluate against their reader's tolerance.
No specific content flags were raised by community reviewers, which is consistent with the mild intensity score.
Thematically, Foundation and Earth explores science & nature, adventure, philosophy, and mystery — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 13+ range — the maturity and attention span match the story's pacing.
- ✓ Readers who like a steady plot with enough momentum to keep pages turning.
- ✓ Kids drawn to stories about science & nature, adventure, philosophy.
- ✓ Readers who fall hard for one book and want a long series to live in — there are 4 more books in the Foundation series.
Maybe not for
- ! Readers looking for something heavier — this is a gentle, low-stakes story by design.
For Parents
Content Intensity
10MT — Moderate — ThematicLight conflict or tension. Mild peril resolved quickly.
Was our "Mild" content intensity rating accurate for this book?
Reading Insights
Hook Factor
6/10Engaging read with solid pacing and interesting themes.
Discussion Potential
1/10A lighter read — great for independent enjoyment.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 9780553587579
- Pages
- 499
- Publisher
- National Geographic Books
- Published
- 2004
- Type
- Fiction
- Lexile
- 890L