Archaeology and cultural anthropology show that humans developed many discrete skills (social, technological, natural history, and language intelligence) over the past million years, but only recently have combined these into "broad" intelligence. Understanding learning is a key issue. Metacognition, the ability to consider one's…

The practices emphasizing learning, reasoning and achieving the solutions in mathematics helps the students to develop their own understanding of the content. The development and understanding concepts of learning mathematics in elementary and middle schools in United States are discussed.