In my opinion, creative types of work are the most important, because the child is constantly learning the world, and this  -interesting environmental  projects  creation of sites, constant solution of non-standard tasks, readiness to make creative decisions.

Learning is hard mental work. And for this work to be successful, it must be interesting, desirable for students. Moreover, it is interesting  be not only a subject but also a way of knowing. One of the most effective ways of learning is a research approach to the subject of study, when students are not given ready-made conclusions, but are given the opportunity to put forward their own hypotheses, or find the right answer. The knowledge acquired in the process of such work is stored in the memory much stronger, because they are not passively assimilated, but acquired through active efforts.