Why is it so important to make friends as we are growing up? For starters, its all about the creative spark that social impact has on young minds. When children forge ahead as groups, they tend to share 'small' ideas that lead to bigger outcomes. As each person in the group can have a say-so in what they are trying to accomplish.
What ignites a kids passion in life? Work and play blended together in a well established balance. Even just having a friend over to play a game can ensure a new perspective on how they learn. Plus, it helps cultivate the experiences they will encounter later in life through the workforce. Enriching each others lives with fun and focus will help create some of the best concepts for math, science and language arts. Parents often get frustrated trying to comprehend what their kids are saying to them. When a friend steps in, they can often reinterpret what they are saying in a clearer manner. That's what friends are for.
Once concepts are developed among groups of kids, its time to implement them in some manner. You can try molding clay, Legos, building blocks or other forms of hands on materials to keep them busy. Each child has a unique learning style and presenting their idea is not always verbal. Sometimes they just need a positive outlet to express what they are trying to present to the world. Plus, the harder a child works at succeeding with friends, the better they will do in school around larger groups. This type of interaction is necessary for positive growth towards excelling in any subject.
Now, in retrospect, if you have previously had friends over and a fight started, think about why this happened. Its probably because one of the other wasn't listening to their opinions and letting them have a chance at interpreting the information. We also know this as debate skills which is very important practice for speech giving and handling arguments in a mature way. Think about how a fight starts . . . one kids steals the Blue crayon and the other one wanted it too. Instead of them yelling, step in and congratulate them for understanding what they want. Rummage through each crayon until they find a shade they prefer. Explain that blue comes in many tints, ranging from sky blue to navy blue.
What have we learned about Social Interaction with children? We see its necessary for creative communication, growing our visions with critique from others and evolving these concepts beyond their understanding. This is all part of the educational evolution in life. As adolescents attain higher knowledge, they are more productive and value other people's opinions. This is one of the most important processes of becoming more refined in any area they are interested in.