绿洲作业第一周 - 周二美术功课

请查看下面来自美术老师的作业：

Year Three
To continue what Year Three have been learning about Shading and how to use line and shadow to create 3D drawing.This is different example using the same elements to create a trick of the eye 3D effect .You may need to to practise several times before you succeed. 
我们继续学习之前学过的有关阴影和如何使用线和阴影来创建3D绘图的主题，这是一个使用相同的元素来创造一个3D效果技巧的不同的例子。

大家可以看附件中的视频来进行练习。

https://v.youku.com/v_show/id_XNDUzOTQwNjU1Ng==.html