Exercises for Preschool Children 2: Play sequences for memory and concentration. Four to six-year-old children will find a variety of interesting tasks here that they can joyfully solve in a playful manner. The booklet includes: matching objects, completing missing items, solving small puzzles, distinguishing colors and shapes, and discovering mistakes. The ideal preparation for elementary school. To work on this exercise booklet, you will need the miniLÜK solution device.