我常常发现老师上课挂图时,不是因为墙壁太厚钉子钉不进去,就是挂图架子太笨拙而难以移动,给老师的教学带来了许多不便。为此,我琢磨制作了一个轻便多功能挂图架,它既能挂图,也能量角、建立坐标和制图表等,具体设计构思如图。 I often find that when a teacher takes a lecture on a school wall chart, it is not because the wall is too thick and nails do not go in, or the wall chart rack is too clumsy and difficult to move. This has brought a lot of inconvenience to the teacher’s teaching. To this end, I have made a lightweight multi-function wall chart frame, which can not only chart, but also the energy angle, the establishment of coordinates and charting, etc., the specific design concept shown.