Knobless Cylinders (Set of 4) - Glossy A030

Item Name: Knobless Cylinders (Set of 4) - Glossy  A030 Item Code: A030 Size(cm): 28.3*15.5*16 Weight(kg): 2.4 Materials: Beechwood   Age(month): 18-72 Certified by: ASTM F963    EN71 1 2 3 Montessori Materials of Sensorial | Visual Sense. A good gift for Children Purpose :1, Visual recognition-Logical thinking exercise2, Hand-eye coordination-alignment3. Fine movement-grasping and aiming4. Organizational competence-completeness Four boxes, each containing ten cylinders in a group, the cylinders correspond to the four groups of cylinders with sockets: red (corresponding to the same height), yellow (corresponding to the positive ratio), green (corresponding to the inverse ratio) ), blue (corresponding to the same diameter)