你需要准备:厚纸板、白纸、剪刀、水彩笔、双面胶、量角器跟我做:先用厚纸板做一个直径为10厘米左右的圆盘,使用双面胶,在圆盘上贴一张同样大小的白纸,平均分成七份,并按照红、橙、黄、绿、蓝、靛、紫的顺序,在白纸的圆上涂上不同颜色(一定要注意颜色的比例)。在圆盘中心处固定一根筷子,双手快速 You need to prepare: cardboard, white paper, scissors, watercolor pen, double-sided tape, protractor with me to do: first with cardboard to make a diameter of about 10 cm of the disc, the use of double-sided tape, affixed to a disc White sheets of the same size, equally divided into seven, are colored in circles of white paper in the order of red, orange, yellow, green, blue, indigo and violet (be sure to pay attention to the proportion of color). Fix a chopsticks at the center of the disc with both hands fast