Lee believes that today's elementary-school mathematics is too complicated and difficult. It includes coordinates, right triangles, π, and cones. "I didn't understand π until I was in middle school, and didn't learn coordinates until high school," recalls Lee. "Cones were part of the university calculus curriculum.
李家同認為，現有的小學數學太難、太複雜，像座標、直角三角形、圓周率、圓錐體等等，「圓周率我到國中才懂，座標我在高中才學，圓錐體更是大學微積分的教材，我們的小學生要學這麼多，越學越害怕，容易掌握的加減乘除四則運算反而不熟悉。」