As easy and clear as they may seem to me, the average student will not always understand them. PU also warned me about it, so maybe I'm getting better. Just thinking about it on concrete, not abstract levels is a step in the right direction. What I didn't take a bigger step in, even though I wanted to, is the differentiation of tasks according to the student's talents.
Just thinking about it on concrete, not abstract levels is a step in the right direction.