Look & Compare. Teach Visual Perceptual Skills by using these cards. The learner has to identify which image of the four does not belong to the same group. This helps with the development of verbal reasoning and problem solving. Each set has 4 playing boards (16 x 16 cm) and 36 transparent tiles. On each playing board there are 9 designs. These 9 designs have to be covered by a transparent piece. Based upon the different instructions, the learners have to find the correct transparent tile. Size: 16 x 16 cm