The big book of how things work

Brent Butterworth

Cover of The big book of how things work

The big book of how things work

Age Rating, Reading Level & Content Guide

by Brent Butterworth

Reading Level 4-5 Gentle (Lvl 1) Ages 9-12 Balanced Read

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

TechnologyChildren's questions and answersScience & Nature

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 — Gentle
Gentle Mild Moderate Intense Very Intense

No conflict beyond everyday childhood experiences. Safe for sensitive readers.

Data confidence: standard

Was our "Gentle" content intensity rating accurate for this book?

Reading Insights

Hook Factor

1/10

A steady, thoughtful read that rewards patient readers.

Discussion Potential

1/10

A lighter read — great for independent enjoyment.

Book DNA

Multi-dimensional content fingerprint

Vocabulary Level
4
Emotional Weight
2
Theme Richness
3
World Scope
1
Data Confidence
7

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Details

Book Length

160 pages
ISBN
9781561730919
Pages
160
Publisher
Publications International
Published
1991
Type
Nonfiction

Genres

Subjects

TechnologyChildren's Questions and AnswersQuestions and Answers