My DS will be 3 at the end of January. He can be lovely and well behaved but he's been horrible just lately. He shouts /screams "Nooooo!" at us, throws things at us, hits us, has a meltdown about brushing his teeth, getting undressed/dressed and having a bath. We use the naughty step but even then he sometimes refuses to say sorry. I try very hard not to shout back at him but am firm, and I would never smack him. I have the "How to Talk So Little Kids will Listen" book but haven't had time to read it yet. His nursery worker said she had to ask him to use his listening ears last week as he ignored her when she asked the to tidy toys away. Is this normal toddler behaviour? Will he grow out of it? Any tips please?