Don't Blow It!!

OK, you can blow it in this experiment, and what better way to test a toy than to play with it?  Still, I wanna a little learning for my pains, so let us think about what we are doing, and use the Scientific Method!

 Build-A-Better Blowgun

Purpose: to build a blowgun that is ________________________

Hypothesis:  If I [Independent variable goes here], then the marshmallow will shoot [Dependent variable goes here].

Materials list
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Design Plans:  draw out, with dimensions/measurements

Test: how will I test?  How will I record the data?


What must I control?

How can I tell if one design is  really better?

Conclusion:

We will continue our investigations on Thursday.

For homework: 2 handouts from class. 
Ask your moms for help and also to check your work.  If you happen to have lost the handouts, here are the links:
Improving Observations by Measuring

Comparing Units of Distance   
Do as much as you are able, but you don't have to finish it if you don't understand.  We will practice making graphs in class.




FYI
And if you are interested in reading a summary of how candles/fire works, here is something you can read:

How Does a Candle Work?    

How Fire Works