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The Concept and Teaching of Place-Value Richard Garlikov An analysis of representative literature concerning the widely recognized ineffective learning of "place-value" by American children arguably also demonstrates a widespread lack of understanding of the concept of place-value among elementary school arithmetic teachers and among researchers themselves.
Just being able to use place-value to write numbers and perform calculations, and to describe the process is not sufficient understanding to be able to teach it to children in the most complete and efficient manner. A conceptual analysis and explication of the concept of "place-value" points to a more effective method of teaching it.
However, effectively teaching "place-value" or any conceptual or logical subject requires more than the mechanical application of a different method, different content, or the introduction of a different kind of "manipulative".
And it is necessary to understand those different methods. Place-value involves all three mathematical elements. Practice versus Understanding Almost everyone who has had difficulty with introductory algebra has had an algebra teacher say to them "Just work more problems, and it will become clear to you.
You are just not working enough problems. It is not absurd when it is simply a matter of practicing something one can do correctly, but just not as adroitly, smoothly, quickly, or automatically as more practice would allow.
Hence, athletes practice various skills to make them become more automatic and reflexive; students practice reciting a poem until they can do it smoothly; and musicians practice a piece until they can play it with little effort or error. And practicing something one cannot do very well is not absurd where practice will allow for self-correction.
Hence, a tennis player may be able to work out a faulty stroke himself by analyzing his own form to find flawed technique or by trying different things until he arrives at something that seems right, which he then practices.
But practicing something that one cannot even begin to do or understand, and that trial and error does not improve, is not going to lead to perfection or --as in the case of certain conceptual aspects of algebra-- any understanding at all. What is necessary to help a student learn various conceptual aspects of algebra is to find out exactly what he does not understand conceptually or logically about what he has been presented.
There are any number of reasons a student may not be able to work a problem, and repeating to him things he does understand, or merely repeating 1 things he heard the first time but does not understand, is generally not going to help him.
Until you find out the specific stumbling block, you are not likely to tailor an answer that addresses his needs, particularly if your general explanation did not work with him the first time or two or three anyway and nothing has occurred to make that explanation any more intelligible or meaningful to him in the meantime.
There are a number of places in mathematics instruction where students encounter conceptual or logical difficulties that require more than just practice. Algebra includes some of them, but I would like to address one of the earliest occurring ones -- place-value. From reading the research, and from talking with elementary school arithmetic teachers, I suspect and will try to point out why I suspect it that children have a difficult time learning place-value because most elementary school teachers as most adults in general, including those who research the effectiveness of student understanding of place-value do not understand it conceptually and do not present it in a way that children can understand it.
And they may even impede learning by confusing children in ways they need not have; e. There are at least two aspects to good teaching: The passages quoted below seem to indicate either a failure by researchers to know what teachers know about students or a failure by teachers to know what students know about place-value.
If it is the latter, then it would seem there is teaching occurring without learning happening, an oxymoron that, I believe, means there is not "teaching" occurring, but merely presentations being made to students without sufficient successful effort to find out how students are receiving or interpreting or understanding that presentation, and often without sufficient successful effort to discover what actually needs to be presented to particular students.
That is not always easy to do, but at least the attempt needs to be made as one goes along. Jones and Thornton, p. His [sic; Her] investigation showed that despite several years of place-value learning, children were unable to interpret rudimentary place-value concepts.
It should not be surprising that something which is not taught very well in general is not learned very well in general. The research literature on place-value also shows a lack of understanding of the principle conceptual and practical aspects of learning place-value, and of testing for the understanding of it.
Researchers seem to be evaluating the results of conceptually faulty teaching and testing methods concerning place-value.Apr 17, · We hear a lot of talking about quality, testing and preventing bad software from getting to customers.
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Effective Email Communication - In this article, we will focus on one specific section of written communication - i.e. E-mail communication. We are sharing some tips and tricks to make email communication smoother and effective. This is applicable for all teams and not just the QA team.
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I don't think software testers are going away purely manual testers might be fading away, but that's to be expected. I'm not silly enough to think automation is replacing manual testing, but it's definitely displacing some, just like automation is displacing some in manufacturing.