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RE: Geometry Proof Question
Posted:
Sep 13, 2012 2:45 PM
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proctor
________________________________
From: owner-nyshsmath@mathforum.org [owner-nyshsmath@mathforum.org] On Behalf Of TKENYON@crcs.wnyric.org [TKENYON@crcs.wnyric.org]
Sent: Thursday, September 13, 2012 2:01 PM
To: nyshsmath@mathforum.org
Subject: Re: Geometry Proof Question
You may not proctor your own exams either.
-Tom Kenyon
CRCS Mathematics/Physics
tkenyon@crcs.wnyric.org<mailto:tkenyon@crcs.wnyric.org>
-----owner-nyshsmath@mathforum.org wrote: -----
To: "nyshsmath@mathforum.org"<mailto:nyshsmath@mathforum.org> <nyshsmath@mathforum.org><mailto:nyshsmath@mathforum.org>
From: Jenni Leaver
Sent by: owner-nyshsmath@mathforum.org<mailto:owner-nyshsmath@mathforum.org>
Date: 09/13/2012 12:17PM
Subject: Re: Geometry Proof Question
And to piggyback on Tom's email, our principal has reminded us that we will NOT be allowed to grade our own exams this year.
Where do we stand on proctoring our own exams?
Jenni
From: "TKENYON@crcs.wnyric.org"<mailto:TKENYON@crcs.wnyric.org> <TKENYON@crcs.wnyric.org><mailto:TKENYON@crcs.wnyric.org>
To: nyshsmath@mathforum.org<mailto:nyshsmath@mathforum.org>
Sent: Thursday, September 13, 2012 11:11 AM
Subject: Re: Geometry Proof Question
I've seen the following styles as acceptable by teachers from various schools: "Theorem 5.2" , "Definition of an angle bisector" , "The bisector of an angle is a ray whose endpoint is at the vertex of the angle and which divides the angle into two congruent angles" , "< bisector ÷ an < into 2 ~= <'s" [~= being written as the correct symbol for congruent.]
Our evaluations depend on how well the students do on the Regents exam. I foresee a huge uproar if situations like this occur: teacher A's students (graded by teacher X) get full credit for "def'n of an angle bisector", but teacher B's students (graded by teacher Y) lose credit for "def'n of an angle bisector." To the best of my knowledge, what is acceptable on the Integrated Geometry Regents proofs has never been conveyed to teachers. Nor have the rubrics ever addressed this.
This seems to be a problem that needs to be addressed NOW, before students spend the year learning how to write reasons which will be considered unacceptable. Or, will we be told to accept anything that's even close? Or, will they realize this is a huge problem and scrap giving proofs on the Regents exam?
-Tom Kenyon
CRCS Mathematics/Physics
tkenyon@crcs.wnyric.org<mailto:tkenyon@crcs.wnyric.org>
-----owner-nyshsmath@mathforum.org wrote: -----
To: nyshsmath@mathforum.org<mailto:nyshsmath@mathforum.org>
From: Bob Thomas
Sent by: owner-nyshsmath@mathforum.org<mailto:owner-nyshsmath@mathforum.org>
Date: 09/13/2012 09:15AM
Subject: Geometry Proof Question
While discussing the new curriculum and planning, we have a new teacher who has some different ways of completing proofs. We are wondering if anyone has seen them or would allow credit for it on the regents.
For example, she writes: (= means congruent)
//-> = <'s
for "parallel lines cut but a transversal form two congruent alternate interior angles"
or
= P = (triangle symbol) =
for "Corresponding parts of congruent triangles are congruent"
A couple of us are uncomfortable with these type of "reasons" on a proof and are curious, do you know if they would be given full credit and what your thoughts are. Thank you for your time.
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