An Inquiry Into the Teaching of Addition And Subtraction ..
An Inquiry Into the Teaching of Addition And Subtraction ..
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In this latter case, it may be regarded as one greater for each simi than the result for the corresponding sum in the lower group, — b, common element readily enough perceived after it has been ob-.
tained, but hardly effective, in that, for example, 4 and 2 are known to be 6 because 5 and i are 6. The child could only recognize an unknown sum as belonging to the 6 group through the fact that another sum, one of whose addends was identical with one addend of the unknown, and the other less by o...ne than the other addend of the un- known, had 5 for its result, — s. generalization which once mastered would be applicable to all groups, but whose mastery is at least sufficiently difficult to have prevented any attempt to utilize it by the disciples of Grube. Under the Grube order each elementary sum has been taught as a fact separate and distinct from other elementary sums, — except in so far as with each sum has been taught its inversion, which practice with that of simultaneously teaching the corresponding elementary differences, prod- ucts and quotients, need not now be considered.
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To quickly assess the difficulty of the text, read a short excerpt:
In this latter case, it may be regarded as one greater for each simi than the result for the corresponding sum in the lower group, — b, common element readily enough perceived after it has been ob-.
tained, but hardly effective, in that, for example, 4 and 2 are known to be 6 because 5 and i are 6. The child could only recognize an unknown sum as belonging to the 6 group through the fact that another sum, one of whose addends was identical with one addend of the unknown, and the other less by o...ne than the other addend of the un- known, had 5 for its result, — s. generalization which once mastered would be applicable to all groups, but whose mastery is at least sufficiently difficult to have prevented any attempt to utilize it by the disciples of Grube. Under the Grube order each elementary sum has been taught as a fact separate and distinct from other elementary sums, — except in so far as with each sum has been taught its inversion, which practice with that of simultaneously teaching the corresponding elementary differences, prod- ucts and quotients, need not now be considered.
What to read after An Inquiry Into the Teaching of Addition And Subtraction ..?
You can find similar books in the "Read Also" column, or choose other free books by Yocum, Albert Duncan, 1869- to read onlineMoreLess
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