What kind of activities could i do with children who have social communication difficulties in KS2 (Year 3 )?

you can have team building games where they have to talk to others meet the aim of the game and then later in the year you can do hot seating - which is where you tell them about a person and then they have to get into character this can be from a book and a child sits on a chair in front of all the other children and this will build confidence if this doesn't work you can pair them up with a child who is overly social and they will speak to them eventually it may take time but they'll get there eventually.