English: Toothpick puzzles involve making a pattern from a few toothpicks, then adding, removing, or moving a few, to attain another shape or goal. In this photo, the book shows an arrangement of five squares. The challenge is to move exactly three toothpicks to a different location, so as to create three rectangles, all the same size. This is one of several games and puzzles that Big Brother Mouse, a literacy project, offers at its "Discovery Days" in Lao schools and youth centers. The events also include science experiments, fossils and minerals to examine, and number games.