I currently coach 2 separate rec classes on different days but one of my classes has a problem child in it... The little boy in question refuses to do what he is told is unsafe and mean. E.g yesterday we were on bars and one of the stations was to front support walk along the top of the bar that we had set up (boxes were stacked so there was easy access and etc so that wasn't a problem) this child then proceded to hang upside down with his legs on the bar and flip off of the bar ( completely off) and when I looked over and saw this happening I had to basically grab the children off the bar that I was spotting ( I want coaching the station he was on) and run over pick him up off the ground and plonked him down next to my feet for the rest of the lesson he kept crawling away and I had to keep dragging him back and sitting him down again which means I clumsy spot the pullovers on bars so everyone missed out what a shame... When it was the end of the lesson we all lined up on the line and I havetr students stickers but when some of the other children wee choosing he demanded !HURRY UP AND GIVE ME MY STICKER! I didn't end up giving him a sticker because he was so rude and naughty that day. My question is -how can I controll this kid.my only problem is now some other kids are starting to follow his actions... I'm lost please help