Windbag - One Breath Bernoulli Bag Amaze everyone by blowing up your Windbag in just 1 breath!
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A Steve Spangler Science Classic!
How many breaths does it take to inflate an 2 meter (8 ft) Windbag? 70 breaths, maybe? Why even try? With a simple science secret you can amaze your students and friends by blowing up your Windbag in one breath! If you don't believe it, try this amazing science activity! Windbags are so light and strong that even the smallest scientist can demonstrate the amazing properties of air! Recommended for children ages 4 and up.
What's included?
- Windbags in your choice of quantity
- Science activity guide
How does it work?
Tie a knot in the end of the 2 meter x 25 cm (8 ft x 10 in) bag and stretch it out on a smooth surface. Blow into the bag using the special science secret and your Windbag inflates with one breath! The activity guide is filled with fun science experiments.
What does it teach?
Use this air-mazing experience to learn about the properties of air molecules and how they move. Demonstrate the scientific principle called the Bernoulli Effect, which explains why you can blow up the amazing Windbag with only one breath! Expand your focus and use this opportunity to discuss how air pressure creates weather systems that move across the continents and how airplanes fly!
Product FAQ

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Guinness World Record Event
May 7th, 2009 -
Windbag
May 22nd, 2006
Click the thumbnail below to see the video.
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Great Product
Karen Alldredge - March 15, 2010
We used them at our preschool of 4's and 5's. The children loved them. They ran on the playground to fill the bags with air showing that air takes up space. An added benefit was the great exercise that the children received with all the running. The bags were extremely durable - no tears or holes even after extensive use. Thanks for a great product. |
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Great idea
Jenny Brown Yukon, OK - November 3, 2009
These are colorful and fun, but I opted to use the slightly cheaper diaper genie bags instead. It still amazed the teens I was working with, but they smelled and were a dingy green color. I wish I had ordered these instead. |
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