Puzzles are games where the learner has significant control.
Some games are games of chance where the learner has very little control.
Some games have competitive or cooperative goals that provide shared control. Other games provide a way to express evaluation about the game itself. Art and science are such games. Each of these categories of games provides concrete examples for classroom use for thinking about thinking and a concrete way to explain the different levels of thinking possible. Using just the concept of puzzles, for example, five levels of the thinking skills can be discussed with the youngest of school age students by engaging students in playing with puzzles and talking about puzzle thinking.