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KnovaKNOVA — A free reading app with curriculum-aligned passages on History & Science for Grades 3-8

Two Types of Muscles — Reading Comprehension

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Grades
  • 3
  • 4
  • 5
Standards
  • NGSS 4-LS1-1
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About This Reader

This 250-word reading passage introduces fourth-grade students to the two main types of muscles in the human body: voluntary and involuntary muscles. Aligned with NGSS 4-LS1-1 and the Disciplinary Core Idea LS1.A: Structure and Function, the passage explains how voluntary muscles like those in arms and legs are controlled consciously for activities like walking and jumping, while involuntary muscles such as the heart and stomach work automatically without conscious thought. The content uses age-appropriate language and relatable examples to help students understand how different muscle types serve different functions in keeping the body alive and active. The passage includes audio integration for enhanced accessibility and engagement. Students explore key vocabulary including voluntary muscles, involuntary muscles, automatically, and skeletal muscles. Supplementary activities include comprehension questions, writing prompts, and graphic organizers that help students compare and contrast the two muscle types and understand their structure and function in the human body system.

Perfect For:

👩‍🏫 Teachers
  • • Reading comprehension practice
  • • Auto-graded assessments
  • • Literacy skill development
👨‍👩‍👧‍👦 Parents
  • • Reading practice at home
  • • Comprehension improvement
  • • Educational reading time
🏠 Homeschoolers
  • • Reading curriculum support
  • • Independent reading practice
  • • Progress monitoring

Reading Features:

📖
Reading Passage
Engaging fiction or nonfiction text
Comprehension Quiz
Auto-graded questions
📊
Instant Feedback
Immediate results and scoring
📄
Printable Version
Download for offline reading
🔊
Read Aloud
Voice-over with word highlighting

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