More ideas from Tuba
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.

Projects described in books or shown on Youtube seem absurdly easy, but I have yet come across a project that didn't need any tinkering befo...

Projects described in books or shown on Youtube seem absurdly easy, but I have yet come across a project that didn't need any tinkering befo...

Erya Perde

Erya Perde

Erya Perde

Erya Perde

Erya Perde

Erya Perde