Maybe a better word is "toil", or just "hard work". No matter how good the teacher is, there's almost no student in the world that can learn effectively withou

Maybe a better word is "toil", or just "hard work". No matter how good the teacher is, there's almost no student in the world that can learn effectively without actually putting in the effort of working through problems on their own. The best teachers and curricula are the ones that dose out the hard work to maximize learning.