Behaviour modification techniques?

[daycaremom9]

I've been having the same issues with a 2 year old boy, he's been here for a year. It has been a constant issue. Mom seems to be on board and claims to be disciplining each time. I've started giving out stickers when I witness a kind act by one of the children. I've also been separating this child from the other children whenever he demonstrates bullying behaviours. Hopefully these two ideas will work.