如同显微镜下的纸巾：明暗练习

要理解素描中的明暗效果，培养对纵深感的感知能力非常有帮助。在平面素描上添加阴影，有助于我们感知画面所呈现的三维纵深效果。这有点像一种“魔法”：只有当阴影落在恰当的位置时，我们才能分辨出不同的层次。

我很高兴在此推荐 theartproject chad brown 制作的一段精彩视频教程。Chad Brown 是一位美术教师，他为自己的学生专门制作了这段教学视频，用以讲解本课项目。他完整记录了创作过程，学生们则依据该视频完成自己的作品。这是一个极好的教学方式，我也期待看到 Chad 的其他视频！请观看视频，并享受学习过程吧！

我与七年级学生共同完成了这幅素描。我们首先用铅笔绘制第一层：一种带孔洞的膜状结构，形似圆角矩形的丝带。接着，我们勾勒出数层这样的膜状结构，并用彩铅为其添加明暗。关键技巧在于：每当一条丝带从另一条丝带下方穿过时，就在其上方丝带的下方区域绘制投影。上方丝带在下方丝带上投下阴影，从而清晰展现各层之间的纵深关系。

我们为每一层选用不同颜色；在绘制完3–4层后，再用黑色记号笔涂满背景，进一步强化纵深感。

Like tissues at the microscope: shading exercise

In order to comprehend the shading effects in a drawing, it’s very useful working on the perception of the depth. Adding shadows on a flat drawing helps our perception in seeing the three-dimensional effects of the depth. It’s a sort of “magic”: we can understand the different layers just if the shadows are in the right spots.

I’m glad to show here below a great video tutorial from theartproject chad brown. Chad Brown is an art teacher who created this tutorial for his students, to explain this project in his class. He has made the video of the process and his students use it to make their pieces. This is a great idea and I look forward to watching other Chad’s video. Have a look at he video and enjoy!

I created this drawing with students of grade 7th. We started drawing the first layer with a pencil. We drew some kind of perforated membrane, like a ribbon with rounded corners. We have sketched few layers of these membrane and we have shaded them with colored pencils. The trick is to create a shadow every time that a ribbon goes under another one. The ribbon above creates a cast shadow on the ribbon below, so we can see the depth of the layers.

We used a different color for every layer: after we have drawn 3-4 layers we have colored the background with a black marker, to emphasize the depth.

就像显微镜下的组织着色练习

如同显微镜下的纸巾：明暗练习

Like tissues at the microscope: shading exercise