Augsburg, De Resco Leo, b. 1859 · Boston, New York, Educational Pub. Co · leaf 145
portant aims in teaching is to turn per-ceptive knowledge into conceptive ; to get the principle out of thearithmetic into the mind of the pupil, where he can use it concep-tively ; to loarn perceptively the meaning of words and things sothat the knowledge may be reproduced in thought form.… … ^ 3 The Triangular Prism may be made the basis of objectscontaining obli(iue lines. For convenience its study is divided thesame as the cylinder, into (1) the vertical triangular prism. Fig.1 ; (2) the horizontal triangular })rism, Fig. 2 ; (3) the horizontalreceding triangular prism, Fig. 8.…
Drawing
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