The Teaching of Arithmetic
The Teaching of Arithmetic
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In our eReader you can find the full English version of the book. Read The Teaching of Arithmetic Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book The Teaching of Arithmetic
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To quickly assess the difficulty of the text, read a short excerpt:
This identity of " X " and "of " is soon taught. The child can draw lines or rectangles to discover that J of J or J of J is J, a result reached by the ordinary rule, thus r-i-5.
4x2 So, too, he can discover on his ruler edge that § of £ is J or that £ of § is the same as f of £, i. E. F or J, which again may be reached by cancelling and multiplying in the usual way.
The close identity of "of" and "x" is also seen by comparing answers to pairs of problems such as — (a) J of 3 inches ; \ inch X ...3.
(6) | of 4 inches ; f inch X 4.
(c) f of 3 shillings ; fs. X 3.
(d) | of £2 ; £J X 2.
I — i — i — i — l — i — I — i — I — i Fig. 50.
Interpreting, then, the problem 1J X 2 J as meaning 1J of the group 2 J, we may represent this group by drawing or by concrete objects, and so find an answer.
(a) Using lines, a group of 2J can be arranged as in Fig. 50.
THE TEACHING OF FRACTIONS 217 Thus 1 J such groups can be shown as in Fig. 51 ■i -> Fig.
What to read after The Teaching of Arithmetic?
You can find similar books in the "Read Also" column, or choose other free books by Frederick Felix Potter to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
This identity of " X " and "of " is soon taught. The child can draw lines or rectangles to discover that J of J or J of J is J, a result reached by the ordinary rule, thus r-i-5.
4x2 So, too, he can discover on his ruler edge that § of £ is J or that £ of § is the same as f of £, i. E. F or J, which again may be reached by cancelling and multiplying in the usual way.
The close identity of "of" and "x" is also seen by comparing answers to pairs of problems such as — (a) J of 3 inches ; \ inch X ...3.
(6) | of 4 inches ; f inch X 4.
(c) f of 3 shillings ; fs. X 3.
(d) | of £2 ; £J X 2.
I — i — i — i — l — i — I — i — I — i Fig. 50.
Interpreting, then, the problem 1J X 2 J as meaning 1J of the group 2 J, we may represent this group by drawing or by concrete objects, and so find an answer.
(a) Using lines, a group of 2J can be arranged as in Fig. 50.
THE TEACHING OF FRACTIONS 217 Thus 1 J such groups can be shown as in Fig. 51 ■i -> Fig.
What to read after The Teaching of Arithmetic?
You can find similar books in the "Read Also" column, or choose other free books by Frederick Felix Potter to read onlineMoreLess
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