Teacher-prepared notes show students what is important and how ideas relate, and offer a model for how students should take notes themselves (Marzano et al., 2001). In North America Indian groups spoke more than 300 different languages and had diverse cultures. According to their environment, they made their living by hunting, fishing, farming, or herding. Their social organization ranged from small tribes, composed of several clans (related families), to large confederacies, composed of many tr