Decentering: less focused on themselves, begin to realise their feelings are unique and may not be shared by others
Conservation: becoming aware of surroundings and learn things remain the same despite existing in a different form (knowing the amount of juice in original bottle is the same when in a glass)
Reversibility: learns they can return to their original state unchanged (juice can be pored back in bottle)
Class inclusion: group objects based on shape or type
Relations: use logic to organise items (arrange objects in size)