挂图是生物学教学所采用的最基本的间接直观教具。但是,不管是购买的挂图或是自己动手绘制的挂图,纸质都比较薄,在演示过程中容易损坏,影响挂图的寿命,在保存过程中,也因经常折迭,造成折缝破损,加上虫蛀、纸质老化等因素,也影响了挂图的使用年限。国画的传统裱糊,用料讲究,操作细巧,成本高,价格贵,对一般教学用挂图来说,没有必要也承受不起。经多年反复实践,我们摸索出一种简便易行,成本低廉,耐久实用的裱糊挂图的新方法。 The flip chart is the most basic indirect visual aid used in biology teaching. However, whether it is a purchased wall chart or a self-drawn wall chart, the paper is relatively thin, easily damaged during the demonstration, and affects the life of the wall chart. In the preservation process, due to frequent folding, crease damage is caused. Insect mites, paper aging and other factors also affect the useful life of the wall charts. The traditional Chinese painting is meticulously used, the materials used are delicate, the operation is meticulous, the cost is high, and the price is high. For a general teaching wall chart, it is not necessary to afford it. After many years of repeated practice, we have come up with a new method that is simple, inexpensive, durable and practical.