What reading level is Lonnie Johnson?

Lonnie Johnson by Lucia Tarbox Raatma is at a Level 4-5 reading level. Recommended for Lower Grades readers (Ages 5-8).

What age is Lonnie Johnson appropriate for?

Lonnie Johnson is recommended for Ages 5-8. HootRating: 9C (Clear).

What genre is Lonnie Johnson?

Lonnie Johnson is nonfiction — Juvenile Nonfiction. Part of the Little Inventor; Smithsonian Little Explorer series.

Does Lonnie Johnson have any content warnings?

Lonnie Johnson has a HootRating of 9C (Clear). No specific content flags noted. On HootRated, every book is rated across four dimensions — emotional, physical, social, and thematic — to help parents make informed choices.

How many pages is Lonnie Johnson?

Lonnie Johnson by Lucia Tarbox Raatma is 32 pages (approximately 1,311 words).

Reviewed by HootRated editorial · Last updated May 18, 2026

Lonnie Johnson

Lucia Tarbox Raatma

Lonnie Johnson

Age Rating, Reading Level & Content Guide

NASA Scientist and Inventor of the Super Soaker

by Lucia Tarbox Raatma

Little Inventor; Smithsonian Little Explorer

Reading Level 4-5 9C Ages 5-8 Balanced Read Page-Turner

The text is written at a 4th grade reading level, the subject matter is intended for younger children (ages 5–8), and the content is gentle with no concerning themes.

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About This Book

Discover how Lonnie Johnson went from exploring space as a NASA engineer to creating the thrilling Super Soaker water gun that kids everywhere love. This inspiring tale celebrates creativity and determination through vibrant pictures and exciting storytelling. Join the adventure of turning dreams into reality with hard work and imagination!

Themes

TechnologyInventionFamily Science & Nature

Quick Assessment

This is a Level 4-5 book with gentle content intensity. No notable content concerns flagged. Written for readers ages 5-8.

Why we rated Lonnie Johnson 9C

Lonnie Johnson is written at a Level 4-5 reading level across 32 pages (approximately 1,311 words). Strong independent readers around grade 5.3 can typically handle this book on their own; with parent or teacher support, Lonnie Johnson works for readers up to grade 6.3.

Read aloud, Lonnie Johnson takes about 9 minutes, which fits within a single read-aloud session.

We rate Lonnie Johnson 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, Lonnie Johnson explores technology, invention, family, and science & nature — these threads give the book room to mean different things to different readers.

Good fit for

✓ Children in the Ages 5-8 range — the maturity and attention span match the story's pacing.
✓ Reluctant readers who need fast-paced, hook-heavy stories to stay engaged.
✓ Kids drawn to stories about technology, invention, family.
✓ Readers who fall hard for one book and want a long series to live in — there are 5 more books in the Little Inventor; Smithsonian Little Explorer series.
✓ 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.