Children in an art class use red, yellow, and blue tempera paint to paint on white paper, to let the children mix colors as they wish, and understand the result of mixing. 7.

• 图6：上美劳课时，老师将红、黄、蓝三原色的广告原料倒在白纸上，让园童自行以手指调色，以瞭解颜色的变化。