Monday, December 1, 2014

Tessa Arias' "The Ultimate Guide to Chocolate Chip Cookies"

I think this very important cookie research is appropriate for the Christmas cookie baking season. I also believe that it provides a good example of the scientific method.

Arias started out with a baseline cookie recipe (baseline Nestle Toll House Cookie Recipe, which also served as her control group) and modified the recipe in a number of different ways (IVs) in order to study several dependent variables (texture, color, density, etc.). The picture below illustrates the various outcomes per different recipe modifications.

For science!

http://www.handletheheat.com/the-ultimate-guide-to-chocolate-chip-cookies


Also, being true scientist, her original study lead to several follow up studies investigating the effect of different kinds of pans and flours upon cookie outcomes.

http://www.handletheheat.com/the-ultimate-guide-to-chocolate-chip-cookies-part-2
I used this example to introduce hypothesis testing to my students. I had them identify the null and alternative hypotheses, the control and experimental groups, etc.

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