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生物挂图是配合课堂讲解的教具之一。要绘好生物挂图,必须从教学和科研的要求出发,要实事求是、注意科学性。绘制时,要简单准确,容易看懂。现从以下三方面简要介绍怎样绘好生物挂图。绘制前的准备工作绘制前必须准备好: 1.工具:绘图纸、铅笔、幻灯机、橡皮、米尺、圆规、墨汁、颜料等。绘图纸的选择一般以图制后是否裱装为标准,如拟裱的挂图,则宜用薄纸,不拟裱的挂图,则用厚纸。选用的纸一般是长110公分,宽80公分。绘图前应充分考虑好边的尺寸应放大或缩小多少倍?如何布局等都应事前作充分的考虑。幻灯机可用上海长宁机修厂生产的蓓蕾牌789型实物全反射投影机或用光耀牌JTD-1型投影幻灯。 2.认真对图稿、标本,模型进行观察、认识。放大复制一幅生物挂图,绝不是单纯的描绘,首先应对图稿、特别是标本模型,要仔细观察它们
Bio flip chart is one of the teaching aids to accompany the classroom. To draw a good biological wall chart, we must proceed from the requirements of teaching and research, to seek truth from facts, pay attention to science. Drawing, to be simple and accurate, easy to understand. Now from the following three aspects of how to draw a good bio-flip chart. Before drawing the preparation must be ready before drawing: 1. Tools: drawing paper, pencil, slide projector, eraser, meter, compasses, ink, paint and so on. The choice of drawing paper in general after the drawing is mounted as the standard, such as the proposed mounted wall chart, it is appropriate to use thin paper, not to be mounted on the wall chart, then use thick paper. The paper used is generally 110 cm long and 80 cm wide. Before drawing should give full consideration to the size of the edge should enlarge or reduce the number of times? How layout should be fully considered in advance. Slide machine can be used Changning Changning Machinery Factory production of Beile 789-type physical total reflection projector or the glory brand JTD-1 projection slide. Seriously on the artwork, specimens, models for observation and understanding. Magnifying and duplicating a bio flipchart is by no means a purely pictorial one. First, deal with artwork, especially specimen models, and carefully observe them