قراءة كتاب Blackboard Drawing
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An outline drawing upon the blackboard expresses much, and is often better than any attempt at light and shade or variety in tone, yet there are frequent occasions when the representation of solidity or of surface is better obtained in illustrative work by the use of the side of the chalk and charcoal. In such cases leave the blackboard for the middle values and use the charcoal and chalk as in previous sketches.
For instance, make a drawing of the wigwam and canoe, adding some of the tree sketches upon which we have previously worked or simply indicating a few tree trunks.
No. 21. Make a light sketch either with chalk or charcoal, indicating the general form of the objects, or if one has a good idea of form, he may make the drawing without outlining. A few oblique strokes handled in the same manner as the gray tones given in No. 1 will produce the wigwam. The details may be added with chalk or charcoal. A single horizontal stroke curving a bit at either end gives the general form of the canoe. If a few minor markings are given, the children will have no doubt of your intent in the sketch. For the tree trunks use the stroke suggested by No. 9, and for the water consult No. 17 and No. 18, Plate 7.
No. 22. The woodland appeals to all children and is frequently the topic in history, geography, botany, literature, and nature study as well as drawing. A few broad, gray strokes will give the sky. With a cloth, erase tree tops for the distance and a few vertical lines for tree trunks. Use the vertical strokes suggested in No. 9 for the light tones in the trees and charcoal for the darks to produce the cylindrical effect. Mass the foliage as in the trees previously drawn and add the necessary markings for branches.
No. 23. A landscape with the old house in the foreground gives an opportunity to put into practice many of the previous suggestions.
No. 24. This sketch was asked for as an illustration for the study of colonial history. In both No. 23 and No. 24 the sky is drawn by the use of the horizontal stroke and the clouds, trees, and distance erased with a bit of soft cloth. The strokes used in the buildings and fence are evident and need no interpretation.
Plate No. 12 shows two looms made by the children, and the beginning of the rugs they are weaving from their own designs. The illustration is from the blackboard drawing made by the teacher to show how the Indians made and used a loom. This illustration has been used in history, geography, and manual training.
Lessons in geography often require quick illustration. The school building may not be well located for this study, or the teacher is not fortunate enough to have a good series of pictures for the use of his class. In such cases, or in any case, even when he has other material, blackboard illustration will help the
