下方是意大利维琴察省圣彼得罗·穆索利诺市乔苏埃·卡尔杜奇小学五年级学生绘制的明度渐变“隧道”作品照片。在优秀教师维罗尼卡·达拉·加萨（Veronica Dalla Gassa）的悉心指导下，孩子们完成了这些作品。请看他们的技法——实在太棒了！
A “tunnel” in tonal gradation
We continue the exercises to learn how to create the perfect tonal gradations! This time with the classes of sixth grade we paint a mysterious hallway that is lost to infinity, populated by strange characters. First we prepare the geometric drawing of the tunnel, tracing the square’s diagonals. The sheet is divided into concentric frames of the width of 1.5 cm. We begin to paint starting from white and adding little by little the color we chose. Once you get to the pure color, we can add small amounts of black to proceed with the dark tones. But be careful, the gradations proceed in the opposite direction! Once the painting is completed, we also add images cut from magazines, for make more animated our tunnel.
Below here is a photo of the “tunnels” in gradation, painted by pupils of 5th grade. They are in the Primary School of Giosuè Carducci in San Pietro Mussolino, province of Vicenza in Italy, under the excellent guidance of the teacher Veronica Dalla Gassa. Look at the technique: They are just great!
