Speaking of good v.bad science teachers. In grammar school (at about the
age of 8 years) my daughter brought home a paper she was very proud of.
She was asked to draw a picture of a vertebrate and a non-vertebrate. She
drew a picture of a donkey and a hamster - - and was given a grade of 100%
correct. I brought this up to the teacher who told me that it WAS
correct because since rodents have no spines in order to fit under
doorways, they are - in her opinion - invertebrates. My daughter has
since graduated from DePaul University with a biology degree - - I dont'
know where that teacher went to school.
Jackie O'
yvan lindekens
Sent by: histonet-bounces@lists.utsouthwestern.edu
04/17/2007 05:06 AM
To
histonet@lists.utsouthwestern.edu
cc
Subject
[Histonet] Re: Picric acid
There were some problems in a high school in the city
of Sint-Niklaas, Belgium too, in september last year.
1400 students were evacuated after which the bomb
squad took the picric acid away and detonated it.
According to Belgian newspapers it left a crater of
one meter in diameter. I wonder what charge they used
to detonate it...
According to the science teacher who found the bottle
containing about 200gm of dried out picric acid, he
wasn't shure whether it was "picric acid" or "citric
acid" in the bottle...
Excuse me: I wouldn't trust such a science teacher to
teach my children.
Anyway, it was a good story for the newspapers: "Time
bomb thicking in high school", "Our children in
danger", "Science teacher saves more than 1000
children", "A heroe!".
Perhaps a new entry for the manuals on psychopatology:
"picric acid psychosis"...
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