| Curriculum | Learning Activities |
|---|---|
| SCIENCE | Identify scientific principles required to solve challenge |
| TECHNOLOGY | Record and estimate timing data |
| ART | Blended multimedia elements |
| ENGINEERING | Design, build and test machine(s) |
| MATHEMATICS | Use comparative data find and define a time-line |
NOTES: Use a hairdryer to create hot air. Consider restricting hair-dryer access to teacher/adult use only.
How did you use your materials to build your balloon? Did you get it to float? How high? Why do you think hot air balloons rise? What do you think would happen to your balloon if you put more or less hot air into it?
Tissue paper, cut and paste - looks good: http://oaklanddiscovery.blogspot.com.au/2012/11/tissue-paper-hot-air-balloon.html
NASA Paper bag and paper clips: https://www.grc.nasa.gov/WWW/K-12/TRC/Aeronauticsp/Hot_Air_Balloon.html
HINTS: The trick is to use a very lightweight envelope to hold the hot air, and have it also be large enough that the volume of hot air is large enough to give you the lift you need.
When out-doors use a large, thin plastic trash bag. A thin and light garbage bag, will hold a large volume of air. Just fill it from the blow dryer while set on high heat, being careful not to melt the bag. Tie it off, and it should give great lift.
On a sunny day, a thin black plastic garbage bag can float without using hot air at all. Just scoop up enough room air to fill the bag, tie off the end, and put it outside in the bright sunlight for a few minutes. The black color will absorb enough heat the make the bag expand and float!