How would you help children in your class to make changes in their concepts?

Depending on what the concepts are and how old the children are. If they are young then simple information with basic facts and ideas. It will have to be fun and appealing as well.

If they are older kids then I would think it would be easier because they will have verbal reasoning skills and so on. You would have to present new or different ways of looking at things. Class discussions are good, kids should be taught to question ideas and concepts and explore other possibilities, You teach them new concepts by exposing them to new information and encouraging debate.