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RE: 4 function calculators
Posted:
Feb 8, 2013 11:45 AM



We were very happy to hear that we could use fact sheets, because, as you point out, filling them in is a great opportunity to find patterns that can then be generalized. Oh well.
From: Edward D Laughbaum [mailto:elaughba@math.ohiostate.edu] Sent: Friday, February 08, 2013 10:44 AM To: SpencerBarnes, Amanda G (Hazard); Seese, Lillian M.; mathedcc@mathforum.org Subject: RE: 4 function calculators
Lillian & Amanda,
The educational value of any calculator is decreased when it is thought of and used as a tool to do mathematics. I think this is what you are both suggesting  it is a tool used to do arithmetic. The issue is that this thinking decreases any possibility of using a 4function calculator as a tool to teach addition, subtraction, multiplication, and division of whole numbers, fractions and decimals. Basic arithmetic operations are loaded with patterns that can be capitalized upon to teach arithmetic. Even at the lowest level of mental processing, the brain is still a great pattern generalizer. The neural process of generalizing both creates a memory of the generalization and produces an understanding of the generalized content. The challenging part of this for teachers is being able to create/develop a pattern that students can generalize from.
Regards,
Ed ========================================== At 10:37 AM 2/8/2013, SpencerBarnes, Amanda G (Hazard) wrote:
Lillian, Have you tried Dollar General, Family Dollar, or Dollar Tree stores? Sometimes they will have small, cheap models of calculators that are only fourfunction. I agree with you 100% as I believe it is important for students to learn these basic operations without a calculator. I have fought the same battle as you, because accommodations are not supposed to compromise the integrity of the course. However, we both know when part of the competencies for the course state that we must teach addition, subtraction, multiplication, and division of whole numbers, allowing the use of even a fourfunction calculator compromises the integrity of the course. Good luck on your search! Amanda Amanda SpencerBarnes Assistant Professor of Mathematics Advisor  Phi Theta Kappa Technology Coordinator  KYMATYC Hazard Community and Technical College 601 Jefferson Avenue Jackson, KY 41339 (606)6667521 ext. 73530 Higher Education Begins Here Change won't happen until the pain of staying the same is greater than the pain of changing. Emory Austin Big men become big by doing what they didn't want to do when they didn't want to do it.  Source Unknown From: ownermathedcc@mathforum.org [ mailto:ownermathedcc@mathforum.org <mailto:ownermathedcc@mathforum.org> ] On Behalf Of Seese, Lillian M. Sent: Friday, February 08, 2013 10:13 AM To: mathedcc@mathforum.org Subject: 4 function calculators This is a follow up to my request for where to by 4function calculators (without square root or % buttons), which I am sending because of all the questions I received from you. First, "why would anyone want a 4function calculator?" Our special needs students have always been given the accommodation of a4function calculator if they need it for number facts. Recently, they have been hard to find, and so our office which evaluates students' needs for accommodations says, "calculator or fact sheet." We thought that meant that we could eliminate calculators altogether for basic math tests on whole numbers, but we were told that we could only eliminate the use of the last 2 keys  say, glue them down? But if we didn't want to do that, we could withhold the calculator for problems involving percents and square roots, and make fact sheets available. All of this seems pretty weird, so we went on a search for 4function calculators  hence my email to you. Second, Lillian Seese Professor of Mathematics St Louis Community College at Meramec 11333 Big Bend Blvd. Kirkwood MO 63122 9847773 It turns out that the only place we've found them is on those sites where you can customize coffee mugs, pencils, etc. for example, "rushimprint.com" sells a solar 4function calculator for $2.57 I sometimes think we are the only department left that feels that learning whole number operations, with borrowing, lining up place values, combining like terms, etc. is important... thanks to all of you who responded to me!



