SCHOOL STEM MODELS
Working Human Lung Model
Demonstrate breathing mechanics using balloons and a bottle model.
LevelSchool / Beginner
Duration1 Week
Components₹250–₹700 CodingLow
Project overview
Demonstrate breathing mechanics using balloons and a bottle model.
Demonstrate breathing mechanics using balloons and a bottle model.
Components / materials required
✓Plastic bottle
✓Balloons
✓Straws/tube
✓Rubber sheet
✓Tape
What the project demonstrates
✓Diaphragm movement
✓Inflation/deflation
✓Respiratory-system explanation
Suggested build plan
01
Bottle chamber
Prepare safe cut bottle with supervision.
02
Lung balloons
Connect balloons to airway tube.
03
Diaphragm
Add flexible membrane.
Learning outcomes
✓Understand negative-pressure breathing
✓Explain diaphragm function
✓Build a clear biology model
Safety / important note
Adult supervision required for cutting plastic bottles.