Middle School Lung Physics & Biology Lab: 3-page STEM packet on respiratory anatomy, thoracic pressure differentials, Boyle’s Law, & expansion ratios.
Explore respiratory system anatomy, thoracic volume changes, diaphragm muscle mechanics, air pressure differentials, and Boyle’s Law! The Mechanical Lung Air Pressure Simulator STEM Lab (BIO03) challenges middle school student teams to act as pulmonary engineers, building a functional dual-lung chest cavity model to investigate how pressure changes drive inhalation and exhalation.
Students explore thoracic cavity volume, atmospheric vs. internal chest pressure, diaphragm contraction, lung collapse mechanics, and volume expansion ratios!
What Is Included in This 3-Page Packet?
Page 1: Teacher Guide & Lesson Plan: NGSS alignment (MS-LS1-2, MS-LS1-3, MS-ETS1-2), target science concepts, bottle prep guide, expected student outcomes, answer keys, and airflow troubleshooting tips.
Page 2: Student Mission Card & Blueprint: Real-world biomedical engineering and pulmonary ventilator device scenario hook, clear material limits box (plastic bottle, 3 balloons, Y-connector/straws, tape, rubber band, scissors, ruler), and a dedicated Thoracic Cavity & Pressure Differential Schematic sketching zone.
Page 3: Testing Log & Scientific Reflection: Structured Data Testing Table (track diaphragm pull distance in cm, inflation state, pressure state, and airflow notes), Applied Math Connection (calculate Expansion Ratio = Lung Diameter / Diaphragm Displacement), and biology reflection questions.
Core STEM Skills Covered:
Biomedical Engineering & Pulmonary Respiratory Physics
Thoracic Volume & Air Pressure Differential Dynamics
Gas Exchange Mechanics & Pneumothorax Puncture Failure Analysis
Data Logging, Metric Length Measurement (cm), and Ratio Calculations
Why Teachers Love This Resource:
3-Page Professional Layout: Includes a complete Teacher Guide for seamless prep, keeping student lab sheets clean and ready to print!
Low-Cost Materials: Uses simple recycled plastic bottles, latex balloons, drinking straws, tape, and rubber bands.
High-Impact Life Science Lab: Replaces abstract textbook diagrams with an interactive, physical pressure model students can manipulate and observe!
Print-Ready: High-resolution, 3-page PDF format ready for instant printing.
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