What reading level is Biology?

Biology by Holt, Rinehart and Winston Staff is at a Level 6 reading level. Recommended for Middle Grades readers (Ages 9-12).

What age is Biology appropriate for?

Biology is recommended for Ages 9-12. Content intensity: "Gentle" (1/5).

What genre is Biology?

Biology is nonfiction — Biology.

Does Biology have any content warnings?

Biology has a content intensity rating of "Gentle" (1/5). No specific content flags noted. On HootRated, every book is rated for emotional, physical, and social content themes to help parents make informed choices.

How many pages is Biology?

Biology by Holt, Rinehart and Winston Staff is 288 pages.

Biology

Holt, Rinehart and Winston Staff

Biology

Age Rating, Reading Level & Content Guide

Holt Biology Principles and Explorations

by Holt, Rinehart and Winston Staff

Reading Level 6 Gentle (Lvl 1) Ages 9-12 Balanced Read

The text is written at a 6th 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

Biology isn't just about boring facts—it's the secret story of life all around you, from tiny cells to giant ecosystems. This book uncovers the amazing experiments that help scientists explore how living things grow, survive, and connect. Discover why understanding biology can change the way you see the world forever.

Themes

Science & Nature - BiologyEducationJuvenile Nonfiction

Quick Assessment

This educational book introduces middle-grade readers to core principles and explorations in biology through hands-on laboratory experiments and detailed illustrations. Suitable for ages 9-12, it supports science learning with clear explanations and answer keys, making complex concepts accessible without overwhelming students. The content is appropriate for classroom or home study, with no mature themes present.