Teacher resources and professional development across the curriculum

Teacher professional development and classroom resources across the curriculum

Monthly Update sign up
Mailing List signup
Search
MENU
Learning Math Home
Patterns, Functions, and Algebra
 
Glossary

Channel Talk

From: Stephen Cicioni (stephen_cicioni@mail.mtwp.k12.pa.us)
Date: Wed Mar 13 2002 - 12:33:58 EST

  • Next message: Lewis, Gordon: "[Channel-talkalgebra] corrections"

             Reply to: Re: [Channel-talkalgebra] Session 8 Problem B10
    Please do, I would look forward to it. I am in my 30th year of teaching, and having a great time.
    My email address is:
    stephen_cicioni@mail.mtwp.k12.pa.us
    steve

    Larry, Rita, Joe, Garrett wrote:
    >Steven,    Thanks for responding.  Yes, I can see that saying "a very large >negative number" would be confusing for your students, and that it is more >correct to say they have large absolute values.      I'm a retired teacher, but >looking forward to taking a temporary-hire position in 7th grade math next month and >perhaps next fall.  This will be a new experience for me, but I am discovering I >really love math, though I tried not to when I was a student. I have been working as a >secondary math tutor in our little town of Homer Alaska for about 4 years. >May I write you later this spring if I need input from someone with more >experience in this area?-Rita Pfenninger
    >----- Original Message ----- From: Stephen Cicioni To: channel-talkalgebra >Sent: Wednesday, March 13, 2002 4:02 AM Subject: RE: [Channel-talkalgebra] Session 8 >Problem B10
    >
    > Reply to: RE: [Channel-talkalgebra] Session 8 Problem B10
    >
    >
    >Rita, I am a middle school math teacher from Lancaster PA. I feel as you >do, the graph should also include a curve in the third quadrant. The T >table includes negative values for x which yield negative values for y. >Giving negative, negative ordered pairs, which, when plotted, are in the >third quadrant.
    >In the paragraph adjacent to the graph on page 218, it talks about "...if x >is a little less than 0, y is a very large negative number." In teaching >integers to my students, I try to avoid the mentioning of very large >negative numbers. We define one integer as being larger than another by >saying the number farther to the right on the numberline is larger. The >use of "very large negative numbers" is confusing to my students. We >describe those numbers by saying they are negative numbers with large >absolute values. For example, negative one is larger than negative >twenty, but the absolute value of negative twenty is larger than the >absolute value of negative one. We define absolute value as a number's >distance from zero on a numberline.
    >Steve
    >
    >Larry, Rita, Joe, Garrett wrote:
    >>In Session 8, Problem B10 we are asked to make a graph of the function
    >>suggested by problem B8, xy=3. We are prompted to choose 5 positive and 5 >negative
    >>numbers for our T table x values.  The negative numbers would yield negative y
    >>values because a neg. times a neg. equals a positive.  (The functions says >xy=3 not
    >>-3 or any other number.)  I am wondering why the graph shown in the solution
    >>section only shows the function in quadrant I when there is a reflection >of that line
    >>in quadrant III, if we are to graph the negative numbers on our T charts as
    >>well.  Am I misinterpretting something?Thank-you,Rita Pfenninger
    >>
    >>RFC822 header
    >>-----------------------------------
    >>
    >> Return-Path: <channel-talkalgebra-admin@learner.org>
    >> Delivered-To: stephen_cicioni@mail.mtwp.k12.pa.us
    >> Received: (qmail 15166 invoked from network); 12 Mar 2002 14:28:42 -0000
    >> Received: from unknown (HELO learner2.learner.org) (207.87.121.131)
    >> by mail.mtwp.k12.pa.us with SMTP; 12 Mar 2002 14:28:40 -0000
    >> Received: from learner2.learner.org (localhost [127.0.0.1])
    >> by learner2.learner.org (Postfix) with ESMTP
    >> id DB2EA5CCD; Tue, 12 Mar 2002 09:25:00 -0500 (EST)
    >> Delivered-To: channel-talkalgebra@learner2.learner.org
    >> Received: from begot.cpb.org (unknown [65.216.162.36])
    >> by learner2.learner.org (Postfix) with ESMTP id BF5545CCA
    >> for <channel-talkalgebra@learner2.learner.org>; Mon, 11 Mar 2002 15:20:19
    >>-0500 (EST)
    >> Received: from wolverine.cpb.org (wolverine.cpb.org [65.216.162.34])
    >> by begot.cpb.org (Postfix) with SMTP id AC1BD17BA
    >> for <channel-talkalgebra@learner.org>; Mon, 11 Mar 2002 15:20:12 -0500 (EST)
    >> Received: from iris.slb.nwc.acsalaska.net(209.112.155.43) by
    >>wolverine.cpb.org via csmap
    >> id 11327; Mon, 11 Mar 2002 15:19:45 -0500 (EST)
    >> Received: from joeandgarrett (86-pm2.hom.alaska.net [209.112.162.86])
    >> by iris.slb.nwc.acsalaska.net (8.11.6/8.11.6) with SMTP id g2BKK7K31795
    >> for <channel-talkalgebra@learner.org>; Mon, 11 Mar 2002 11:20:07 -0900 (AKST)
    >> (envelope-from wintercr@xyz.net)
    >> Message-ID: <000b01c1c939$096705b0$0000a398@joeandgarrett>
    >> From: "Larry, Rita, Joe, Garrett" <wintercr@xyz.net>
    >> To: <channel-talkalgebra@learner.org>
    >> MIME-Version: 1.0
    >> Content-Type: multipart/alternative;
    >> boundary="----=_NextPart_000_0005_01C1C8EC.5CFA5030"
    >> X-Priority: 3
    >> X-MSMail-Priority: Normal
    >> X-Mailer: Microsoft Outlook Express 6.00.2600.0000
    >> X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000
    >> Subject: [Channel-talkalgebra] Session 8 Problem B10
    >> Sender: channel-talkalgebra-admin@learner.org
    >> Errors-To: channel-talkalgebra-admin@learner.org
    >> X-BeenThere: channel-talkalgebra@learner.org
    >> Precedence: bulk
    >> Reply-To: channel-talkalgebra@learner.org
    >> Date: Mon, 11 Mar 2002 11:03:24 -0900
    >>
    >
    >RFC822 header
    >-----------------------------------
    >
    > Return-Path: <channel-talkalgebra-admin@learner.org>
    > Delivered-To: stephen_cicioni@mail.mtwp.k12.pa.us
    > Received: (qmail 26625 invoked from network); 13 Mar 2002 17:13:48 -0000
    > Received: from unknown (HELO learner2.learner.org) (207.87.121.131)
    > by mail.mtwp.k12.pa.us with SMTP; 13 Mar 2002 17:13:46 -0000
    > Received: from learner2.learner.org (localhost [127.0.0.1])
    > by learner2.learner.org (Postfix) with ESMTP
    > id 519765C88; Wed, 13 Mar 2002 12:10:01 -0500 (EST)
    > Delivered-To: channel-talkalgebra@learner2.learner.org
    > Received: from begot.cpb.org (unknown [65.216.162.36])
    > by learner2.learner.org (Postfix) with ESMTP id D5F605C88
    > for <channel-talkalgebra@learner2.learner.org>; Wed, 13 Mar 2002 11:59:05 >-0500 (EST)
    > Received: from wolverine.cpb.org (wolverine.cpb.org [65.216.162.34])
    > by begot.cpb.org (Postfix) with SMTP id 3409617BA
    > for <channel-talkalgebra@learner.org>; Wed, 13 Mar 2002 11:59:00 -0500 (EST)
    > Received: from malik.slb.nwc.acsalaska.net(209.112.155.41) by >wolverine.cpb.org via csmap > id 27004; Wed, 13 Mar 2002 11:58:37 -0500 (EST)
    > Received: from joeandgarrett (110-pm2.hom.alaska.net [209.112.162.110])
    > by malik.slb.nwc.acsalaska.net (8.11.6/8.11.6) with SMTP id g2DGwdO97253
    > for <channel-talkalgebra@learner.org>; Wed, 13 Mar 2002 07:58:39 -0900 (AKST)
    > (envelope-from wintercr@xyz.net)
    > Message-ID: <003101c1caaf$174aa520$0000a398@joeandgarrett>
    > From: "Larry, Rita, Joe, Garrett" <wintercr@xyz.net>
    > To: <channel-talkalgebra@learner.org>
    > References: <20020313125904.97C5F17BA@begot.cpb.org>
    > Subject: Re: [Channel-talkalgebra] Session 8 Problem B10
    > MIME-Version: 1.0
    > Content-Type: multipart/alternative;
    > boundary="----=_NextPart_000_002E_01C1CA63.A57D2620"
    > X-Priority: 3
    > X-MSMail-Priority: Normal
    > X-Mailer: Microsoft Outlook Express 6.00.2600.0000
    > X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2600.0000
    > Sender: channel-talkalgebra-admin@learner.org
    > Errors-To: channel-talkalgebra-admin@learner.org
    > X-BeenThere: channel-talkalgebra@learner.org
    > Precedence: bulk
    > Reply-To: channel-talkalgebra@learner.org
    > Date: Wed, 13 Mar 2002 07:49:47 -0900
    >

    _______________________________________________
    Channel-talkalgebra mailing list
    Channel-talkalgebra@learner.org
    http://www.learner.org/mailman/listinfo/channel-talkalgebra

    You may un-subscribe from this email list at any time by using the online form at the above URL. If you have difficulty using this form, please send email to Channel-talkalgebra-admin@learner.org and our mailing list administrator will assist you. Our privacy policy is posted online at: http://www.learner.org/about/privacy_policy.html


  •  
     

    Learning Math Home | Algebra Home

    © 2002 WGBH Educational Foundation. All rights reserved.

    Home | Catalog | About Us | Search | Contact Us | Site Map

    • Follow The Annenberg Learner on Facebook

    © Annenberg Foundation 2013. All rights reserved. Privacy Policy