彩虹雨伞：综合媒介绘画（附视频教程）
六年级学生用这幅综合媒介绘画作品，总结了此前所学的色环知识、无彩色知识，以及蛋彩画和拓印等技法。
学生们请我制作一个视频教程，完整展示该作品的全部制作步骤、所需材料及分步说明。我校（I.C. Mezzolombardo-Paganella）六年级（1°D班）的学生自发组织，在美术教室共同完成了这个视频教程的拍摄。我很自豪地将它发布在我的YouTube频道上。尽管讲解使用意大利语，但各步骤仍十分清晰易懂：
如视频教程所示，我们首先用直尺与圆规在纸上绘制雨伞轮廓：从三条长度分别为12厘米、13厘米和14厘米的线段出发进行构图。接着，我们用蛋彩颜料为雨伞上色——以三原色（品红、青蓝、柠檬黄）为起点，通过正确调和，获得间色与复色。最后，用黑色记号笔勾勒雨伞外形，并将其剪下。
另取一张纸，先用铅笔绘制人物：先画一条水平基准线，再在其上方画出三条14厘米长的垂直线；围绕每条垂直线画一个拉长的椭圆形作为身体轮廓，再添加手臂、腿部及服装、手部等细节。
用黑色马克笔勾勒人物轮廓后，我们采用拓印技法，以无彩色为其着色：将画纸覆盖于具有浮雕纹理的粗糙表面之上，再用蜡笔或灰色、黑色彩铅在纸面涂抹。
为表现雨丝，我们在背景上用黑色记号笔自由手绘或借助直尺绘制一系列垂直线条。随后，将剪好的雨伞粘贴在人物上方，并用黑色速写笔画出伞柄。
With 6th grade students we made this mixed media drawing that summarizes the knowledge learned so far about the chromatic circle, the achromatic colors and some techniques such as tempera and frottage.
My students asked me to create a video tutorial of the work, with all the stages of construction, materials and step-by-step instructions. The 6th grade students (1°D) of my Institute I.C. Mezzolombardo-Paganella organized themself to create this video tutorial in the art room. I was proud to publish it on my YouTube channel. Even if the explanations are written in Italian language I think it’s quite simple to understand the steps:
As we can see in the video tutorial, first we drew the umbrellas on a sheet of paper with a ruler and a compass, starting from three segments of 12, 13 and 14 cm. The umbrellas have been colored with tempera, starting from the three primary colors and obtaining the secondary and tertiary colors by correctly mixing the primary colors magenta red, cyan blue and primary yellow. The umbrellas were then traced with a black marker and cut out.
On another sheet we drew the figures with a pencil, drawing a horizontal line as a base and three vertical lines of 14cm. Around the vertical lines we drew an elongated oval, and then we drew arms, legs and details of the clothes and hands.
After having outlined the figures with a black felt-tip pen, we colored them with achromatic colors using the FROTTAGE technique. We overlapped the sheet to a rough surface with relief texture and we have colored the sheet with wax crayons or gray and black colored pencils.
To make the rain, we drew a series of vertical lines on the background with a black pen, freehand or with a ruler. Next we glued the umbrellas on top of our figures and drew the umbrella handles with a black sharpie.
