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By Seth Roberts | May 3rd 2008 04:56 AM | 6 comments | Print | E-mail | Track Comments

In a science classroom at a middle school I saw a poster about “the scientific method.” There were seven steps; one was “analyze your data.” According to the poster, you use the data you’ve collected to say if your hypothesis was right or wrong. Nothing was said about using data to generate new hypotheses. Yet coming up with ideas worth testing is just as important as testing them.

It’s like teaching the alphabet and omitting half of the letters. Or teaching French and omitting half the common words. While no one actually teaches only half the alphabet or only half of common French words, this is how science is actually taught. Not just in middle school, everywhere. The poster correctly reflects the usual understanding. I have seen dozens of books about scientific method. They usually say almost nothing about how to come up with a new idea worth testing. An example is Statistics For Experimenters, a well-respected book by Box, Hunter, and Hunter. One of the authors (George Box) is a famous statistician.

The curious part of this omission is how unnecessary it is. Every scientific idea we now take for granted started somewhere. It would be no great effort to find where a bunch of them came from.


Comments

T Ryan Gregory's picture
So -- "formulate a hypothesis" was not one of the steps on this, ahem, elementary school poster?

Seth Roberts's picture

Yes, one of the steps was something like "formulate a hypothesis." But how to formulate a new hypothesis wasn't clear.

Whereas how to test a hypothesis was very clear.


T Ryan Gregory's picture
Just so I understand, this was an elementary school poster, and there *was* a step on coming up with testable ideas. Is that right?

Hank's picture
I am not terribly concerned about a school poster as I am the larger issue of trying to 'teach' the scientific method in the first place. It used to be we taught critical thinking and scientists used that to observe the world and eventually make the new hypotheses and discoveries Seth is concerned about.

I am in my 40s and I never saw a poster outlining the scientific method in school - I learned science, I learned the history of scientific discovery and over time a few things became clear: problems were defined, data was gathered, people thought about it, experiments were done and that was done over and over and conclusions were eventually made.

Roger Bacon didn't need a poster in school and he used the scientific method 800 years ago.

Scientific method posters are teaching kids a checklist rather than a process. It's cookbook science but kids aren't going to have a cookbook for the problems they will need to solve.

T Ryan Gregory's picture
Right - seems odd to me to take a school poster as somehow indicative of what the scientific method is. And in any case, it appears that the poster did not leave out the important component of generating testable ideas. I honestly don't know what the issue is.

T Ryan Gregory's picture
(ps... Francis Bacon too, though only 400 years ago in his case)

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