It's fun to know why
Julius Schwartz
It's fun to know why
Age Rating, Reading Level & Content Guide
Experiments with Things Around Us
by Julius Schwartz
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
Hear the fizz of bubbles popping and feel the cool splash of water as you dive into surprising experiments. Discover the hidden secrets behind everyday things like iron, salt, paper, and plastic. Each experiment uncovers amazing facts that make the world sparkle with science.
Quick Assessment
This engaging middle-grade book uses hands-on experiments to explore scientific facts about common materials such as iron, salt, paper, and plastic. Designed for children ages 9 to 12, it encourages curiosity and learning through simple, safe activities that illustrate core science concepts. There is no intense content, making it suitable for young readers interested in science.
Why we rated It's fun to know why 9C
It's fun to know why is written at a Level 4-5 reading level across 159 pages. Strong independent readers around grade 5.5 can typically handle this book on their own; with parent or teacher support, It's fun to know why works for readers up to grade 6.5.
We rate It's fun to know why as 9C ("Clear") because the content sits in the "Gentle" range — no conflict beyond everyday childhood experiences. Across our four dimensions (emotional, physical, social, thematic) the book reads as evenly gentle; no single dimension stands out as a concern.
No specific content flags were raised by community reviewers, which is consistent with the gentle intensity score.
Thematically, It's fun to know why weaves together science & nature and adventure.
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 science & nature, adventure.
- ✓ Curious kids who prefer real-world topics over made-up stories.
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
9C — ClearNo conflict beyond everyday childhood experiences. Safe for sensitive readers.
Was our "Gentle" 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
- 0070557330
- Pages
- 159
- Publisher
- McGraw-Hill Companies
- Published
- 1973
- Type
- Nonfiction