数学课堂卡通插画插画

Watercolor illustration style, full body human figures with natural proportions, depicting a mathematics classroom scene with teachers, students, a whiteboard showing the equation 2x+5=15, a geometric diagram of an angle marked 90°, children (a girl sitting and two standing children), and educational tools including a protractor, compass, ruler, Rubik's cube, and calculator, all in soft pastel colors with warm tones