Teachers' manual for the Prang course in drawing for graded schools, books 1-6 (1897)
Clark, John Spencer, Prang Company, Hicks Mary D, Perry, Walter Scott · Boston. Prang educ. co. · leaf 201
Ask pupils now to lay their instruments back on the desks, and study their draw-ing. Ask : How does the line 3 4 divide the line AB ? In the centre. The line 3 4 bisects the line AH. How does the line 3 4 compare in direction w ith the line AB ? The line is perpendicular toAB. The line 3 4 is…
Drawing -- Study and teaching
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