Adults and children in indigenous communities of the Americas participate in a horizontal organizational structure; therefore when they work together with one another they are reciprocals of each other. This horizontal structure allows for flexible leadership, which is one of the key aspects of collaborative learning. The indigenous communities of the Americas are unique in their collaborative learning because they do not discriminate upon age, instead Indigenous communities of the Americas encourage active participation and flexible leadership roles, regardless of age. Children and adults regularly interchange their roles within their community, which contributes to the fluidity of the learning process. In addition, Indigenous communities consider observation to be a part of the collaborative learning process.