In a kindergarten a childhood educator frequently reads a story to children and then makes an activity about it. In this section, it is shown a form of a puzzle (fig. 1 -a) that is shown to children after the childhood educator reads to them the story of the “Frog and Duck”. The children have to choose the appropriate character (fig. 1 -b and c) to the question formulated by the childhood educator to place in the puzzle. Once they choose the right character, the trigger image (fig. 2) activates the associated animation that was generated with Microsoft Power Point.