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Re: [Phys-L] Sig Figs homework from my 7th grader



I knew that would get a rise out of you, John.

Excellent example. And it would seem that the Indiana state standards must drill "Sig Figs" pretty hard:
http://www.google.com/trends/explore?q=%22significant+figures%22#q=%22significant+figures%22,+shiitake&geo=US

As a Hoosier, I am ashamed.

Paul

On Oct 9, 2013, at 12:25 PM, John Denker <jsd@av8n.com> wrote:

http://www.google.com/trends/explore?q=%22significant+figures%22#q=%22significant%20figures%22%2C%20shiitake

The sig-figs rules that are taught in high-school chemistry do
not work in practice. Simple examples suffice to prove this.
Students know this! They take it as evidence that the teacher
cannot be trusted.