Captain Invincible and the Space Shapes (Mathstart: Level 2 (HarperCollins Turtleback))

Stuart J. Murphy

Cover of Captain Invincible and the Space Shapes (Mathstart: Level 2 (HarperCollins Turtleback))

Captain Invincible and the Space Shapes (Mathstart: Level 2 (HarperCollins Turtleback))

Age Rating, Reading Level & Content Guide

Three-Dimensional Shapes

by Stuart J. Murphy

Illustrated by Remy Simard

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

Captain Invincible is the only hero who battles not villains, but tricky 3D shapes like cubes, cylinders, and pyramids! Zooming through space, he shows how these shapes pop up everywhere—and understanding them can turn you into a math superhero too.

Themes

Mathematics - GeometryAdventureScience & NatureChildren's Educational

Quick Assessment

This engaging fiction book introduces children ages 9-12 to three-dimensional geometry concepts through the adventures of Captain Invincible. It uses fun space-themed storytelling to teach about cubes, cylinders, and pyramids, making abstract math ideas accessible and exciting for middle-grade readers. The content is age-appropriate with no intense themes, ideal for supporting math learning in an entertaining way.

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

2/10

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
4
World Scope
1
Data Confidence
7

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Details

ISBN
9780606222884
Publisher
Turtleback
Published
September 2001
Type
Fiction

Genres

Juvenile Nonfiction

Subjects

GeometryMathematics