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The AR Booklist
A to Z Mysteries Super Edition #7: Operation Orca book cover

A to Z Mysteries Super Edition #7: Operation Orca

by Ron Roy

National Geographic Books 2015

Challenging read for K–3rd grade

Reading level 4.3 (4th grade) is above the ages 5–9 interest range

Themes include environmental stewardship

4th grade English Juvenile Fiction
2
AR Points
2.1h
Read time
AR Quiz Available

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Genre

Mystery

Themes

  • friendship
  • teamwork
  • problem-solving
  • animal conservation
  • responsibility
  • courage
  • environmental stewardship

About this book

Dink, Josh, and Ruth Rose head to Alaska for a whale-watching trip and spot a mother orca with her calf—until the baby suddenly goes missing. With time running out, the trio follows clues on the docks and out at sea to help protect the vulnerable orca. This fast-paced mystery blends animal facts, teamwork, and kid-powered sleuthing perfect for grades 2–4. Fans love the short chapters, clever clues, and the hidden 26-letter message in the illustrations.

Setting: coastal Alaska and surrounding waters during a whale-watching trip

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Frequently Asked Questions

Is A to Z Mysteries Super Edition #7: Operation Orca right for my child?

It depends — here's what to consider for A to Z Mysteries Super Edition #7: Operation Orca. The reading level is AR 4.3, which is typical for 4th grade. The interest level is rated Lower Grades (K–3), meaning the themes and content are designed for ages 5–9 (K–3rd grade). Themes include friendship, teamwork, problem-solving.

How long does it take to read A to Z Mysteries Super Edition #7: Operation Orca?

At a typical 4th grade reading pace, A to Z Mysteries Super Edition #7: Operation Orca takes around 2.1h to finish. The book has 19,000 words. Slower or faster readers may vary significantly.

Does A to Z Mysteries Super Edition #7: Operation Orca have an AR quiz?

Yes — A to Z Mysteries Super Edition #7: Operation Orca has an AR quiz available, worth 2 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 A to Z Mysteries Super Edition #7: Operation Orca?

A to Z Mysteries Super Edition #7: Operation Orca has an AR reading level of 4.3, which places it at a 4th grade reading difficulty. The interest level is rated Lower Grades (K–3) — 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.