Pramodhnr99@gmail.com 9945051093

Pramodhnr99@gmail.com 9945051093

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Picture of a 2-liter bottle with two straws sticking through the cap. A balloon is held onto the ends of each straw with a rubber band. The bottom of the bottle has been cut off and a third, larger balloon is covering the opening.

Hands-on learning: Lungs. Picture of a bottle with two straws sticking through the cap. A balloon is held onto the ends of each straw with a rubber band. The bottom of the bottle has been cut off and a third, larger balloon is covering the opening.