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Z. Rex book cover

Z. Rex

by Steve Cole

Penguin 2010

★★★★★

Easy read — content targets 6th grade and up

Reading level 4.9 (4th grade) but themes aimed at ages 11+

4th grade English Juvenile Fiction
158
Pages
7
AR Points
5.5h
Read time
AR Quiz Available

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Genre

Science Fiction

Themes

  • survival
  • family
  • technology and ethics
  • trust
  • courage
  • conspiracy
  • identity
  • friendship

About this book

When gamer Adam’s scientist dad vanishes, his search collides with a top-secret project that blurs the line between virtual worlds and reality. Soon he’s being chased by shadowy agents—and a terrifying, intelligent dinosaur that shouldn’t exist. High-speed escapes, high-tech twists, and nonstop danger keep the pages turning. Perfect for upper–middle grade readers who love video games, dinosaurs, and edge-of-your-seat thrills.

Setting: contemporary/near-future United Kingdom and United States; labs, city streets, and desert landscapes

Frequently Asked Questions

Is Z. Rex right for my child?

It depends — here's what to consider for Z. Rex. The reading level is AR 4.9, which is typical for 4th grade. The interest level is rated Middle Grades Plus (6+), meaning the themes and content are designed for ages 11+ (6th grade and up). Themes include survival, family, technology and ethics.

How long does it take to read Z. Rex?

At a typical 4th grade reading pace, Z. Rex takes around 5.5h to finish. The book has 50,000 words. Slower or faster readers may vary significantly.

Does Z. Rex have an AR quiz?

Yes — Z. Rex has an AR quiz available, worth 7 points. Your child will need to take and pass the quiz through their school's Accelerated Reader program to earn credit. The quiz is typically 5–20 multiple choice questions about plot, characters, and setting.

What grade level is Z. Rex?

Z. Rex has an AR reading level of 4.9, which places it at a 4th grade reading difficulty. The interest level is rated Middle Grades Plus (6+) — this reflects the age-appropriateness of the content and themes, not just the reading difficulty. A strong younger reader may handle the words fine while the themes are aimed at an older audience, or vice versa.