The half-moon chair

The half-moon chair is very simple, rests on any kind of chair or stool and consists of:

• A seat
• A plank with holes in it
• Two half-moons, a small one and a big one to the point of which little rods can be fixed that:
  support the child’s shoulder
  stop him bending at the pelvis
  stop him lifting his shoulders
  support the child’s arm