The big book of how things work
Brent Butterworth
The big book of how things work
Age Rating, Reading Level & Content Guide
by Brent Butterworth
The text is written at a 4th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content is gentle with no concerning themes.
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About This Book
Gears grind and buttons click as machines spring to life all around you. From spinning wheels to buzzing robots, every gadget hides a secret waiting to be uncovered. But what happens when the biggest machine suddenly stops working?
Themes
Quick Assessment
This engaging middle-grade book explains the inner workings of a wide variety of machines, devices, instruments, and toys, making complex technology accessible for children ages 9 to 12. It encourages curiosity and critical thinking without overwhelming technical jargon. The content is appropriate for this age group, with no intense or concerning themes.
For Parents
Content Intensity
Level 1 — GentleNo conflict beyond everyday childhood experiences. Safe for sensitive readers.
Was our "Gentle" content intensity rating accurate for this book?
Reading Insights
Hook Factor
1/10A 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
- 9781561730919
- Pages
- 160
- Publisher
- Publications International
- Published
- 1991
- Type
- Nonfiction