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What Are Muscles

Interactive passage with audio narration, comprehension questions, and printable PDF.

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Format
Interactive (Online), Printable (PDF)
Grades
345
Subjects
scienceelareading
Standards
NGSS 4-LS1-1
Languages
English, Spanish

What's included

Reading passage
Reading comprehension
Audio narration
With word word highlighting
Comprehension quiz
Auto-graded
Writing activity
Open-ended response
Glossary & flashcards
Vocabulary practice
Differentiated version
Adapted for varied levels
Spanish translation
Bilingual support

About this reader

This engaging 250-word reading passage introduces fourth-grade students to the essential concept of muscles and how they create body movement. Aligned with NGSS 4-LS1-1 and the Disciplinary Core Idea LS1.A, the passage explains that muscles are body parts attached to bones that work by contracting (getting shorter) and relaxing (getting longer) to pull bones and create movement. Students learn that the human body contains hundreds of muscles and can explore this concept by feeling their own bicep muscle while bending their arm. The passage uses simple, grade-appropriate language and includes bolded key vocabulary terms with immediate definitions. A relatable hands-on example helps students connect the science concept to their own bodies. The passage includes audio integration to support diverse learners and is accompanied by a simplified differentiated version for students reading below grade level. Both English and Spanish translations are provided. Supporting activities include multiple-choice comprehension questions, writing prompts, and graphic organizers that reinforce understanding of muscle structure and function. This foundational lesson prepares students for deeper exploration of body systems and how structures support specific functions in living organisms.
Written by Workybooks TeamPublished by Workybooks
Preview

Sample passage and quiz content

Who it's for

Perfect for the way you teach

Teachers
  • Build comprehension skills
  • Auto-graded quiz
  • Differentiated reading
Parents
  • Read together at home
  • Improve fluency
  • Quiet reading time
Homeschoolers
  • Reading curriculum support
  • Independent practice
  • Track Lexile growth
Topics
musclesmuscle contractionmuscle relaxationbonesmovementskeletal systembicepbody systemsNGSS 4-LS1-1grade 4 science

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