Typically, a small group of children will work together in a team, each making a version of his or her idea in several media. At each passage, their questions about how water wheels work and where they are used deepened and broadened.
Children learn more deeply when they represent the same concept in different media.
Each medium has different affordances. Each affordance provokes a special orientation to the problem to be solved. Children learn to make compromises with what the medium does not easily afford. Other aspects of media, such as modularity, persistence across time, and amount of feedback affect representational bias. Sequences across media affect the child's success.