- Amaze everyone by blowing up a Windbag in just 1 breath!
- Windbags are 2 meters (8ft) long and can be inflated in jut one or two breaths
- Learn about Bernoulli’s principle and the properties of air pressure with this incredible demonstration
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!
- Learn about Bernoulli’s Principle
- Build great 3-D structures using just the Windbags and rubberbands
- Our instructions include great educational activities
Recommended for children ages 4 and up.
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!
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Call: 303-798-2778
Toll Free: 800-223-9080
Monday – Friday
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Steve Spangler Science
4400 South Federal Blvd
Englewood, Colorado 80110
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5 out of 5 Building Community
Gasti –
This year as part of our grade level effort to build community we ordered enough wind bags so that 3 students had a bag (there are 120 students in our grade level) – the challenge to work together to find a way to inflate the bag in as few breaths as possible.Many hundreds of breaths later and a lot of condensation inside the bag (yuck) we had inflated, tied off bags. Then I used one breath by demonstrating the Bernoulli Effect. After a lot of untying they were able to demonstrate the same.The last step was to work together to build a structure within each class. The 4 different colored bags allowed each of our four sections of 4th graders to build structures using tied-off bags and rubber bands. The final design challenge was to conjoin each of the four structures into a multicolored mega-grade-level structure.It is a great first week community building event and it also offers some insight into how different students handle the pressures of time, working in a crunch with others and noise! We used the school gym and it got loud fast with 120 9-10 year olds.This will be an annual event for our grade!
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5 out of 5 Fantastic!
Bailey Dickie –
My group of preschool aged kids had a blast playing with the Windbags! They were amazed that I was able to blow up the entire bag with one breath. The Windbag itself was very durable and was able to withstand the rough play, tugging and throwing of 3 and 4 year olds! The Windbag truly stood up to claims of being able to be blown up with one breath, and there are many activities that can be done with them. Definitely recommend to any daycare, preschool or group of young kids to play and learn with!
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5 out of 5 My favorite Spangler product
April Oaks –
I’ve bought LOTS of things on this website… my favorite is these windbags. It’s such an AWESOME tool to teach kids how airplanes fly. In the video the windbags are shown at 50 seconds and 1:01.
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