Material : Wood Dimension : 11" x 5" Set of 10 pieces Develop the visual perception Helps kids in concepts such as small and big; mathematics and geometry Used in montessori The product allows the child to develop the visual perception by discriminating the different sizes of each block and arranging them into a logical order, which is part of the Sensorial area. It also helps the child to develop other areas like Language, where the child needs to be aware of different concepts such as small and big; mathematics and geometry.Thisproduct is very practical and easy to assemble, which means younger kids will not get frustrated if the task is too difficult to achieve. Brand No Brand SKU 100280760_NP-1020547437