My 4 year-old teacher is having serious problems with the children in her class not wanting to pick up. I have observed and noticed that she is not making them pick up the center they are working in before moving to another. She says they just will not do this and it is easier to let them move on and have the entre class pick up when they are done with centers. She asked for my help today and when I walked in the room was a wreck! Blocks, puzzle pieces, etc. all over the floor. Some of the children were laughing at her when she asked them to pick up. I was stern with them and told them that anyone who did not pick up would not go on the playground. This did not work either. She is a wonderful teacher, but I feel like she lacks skills in this area. Any suggestions to help her? She is new this year, and I do not want to destroy her confidence.