This resource turns circulatory and respiratory systems into a complete, ready to use review for Grade 6-8 biology, covering the same NGSS standard from three different angles.

Students will answer questions such as "How does hemoglobin release oxygen in tissues?", "What happens to the oxygen that is not used by cells?", and "What role do the lungs play in the circulatory system?"

What's Inside?

• 30 Multiple Choice questions as a separate print ready PDF worksheet
• 30 True or False questions as a separate print ready PDF worksheet
• 30 Short Answer questions as a separate print ready PDF worksheet
• Includes Answer Key with Explanations for all 90 questions
• 6 print ready PDF files, 26 pages in total

Each worksheet reviews the same core ideas from a different angle. Use them across a week or unit so students see the material three times without it ever feeling repetitive.

Ways to Use This Resource

• Homework or review before a quiz
• Bell ringers and warm ups during the unit
• Self checking stations, since every answer key includes explanations
• First look diagnostic to plan your unit
• Review before a lab or class discussion

This set is part of a complete NGSS aligned biology unit. The unit also covers From Cells to Systems, Cell Specialization, Body Systems Working Together, Circulatory System, Respiratory System, and Digestive System Breaking It Down, all in the same three worksheet format, so your classroom routine stays familiar while the topic changes.

Suitable for Grade 6-8 biology classes, and for NGSS aligned review at any point in the school year. This set is aligned to NGSS standard MS-LS1-3.