We went through a stage with DD 3.5 at nursery a month or two ago , where she was scratched quite badly in the face and throttled by two separate children. Since that point she has become quite intent about discussing scratching, biting and hitting. When she's annoyed or tired at home she lashes out.
In the past two or three weeks she has been told off at nursery for randomly biting a child , knocking down toys and today hitting others. When I picked her up she then started to tell me about spitting too. I was 
We do sit her down and explain to her that it's wrong and why. Has anyone got any advice please ?