BUILDING CHARACTER OF STUDENT IN THE 21ST CENTURY BY LEARNING MATHEMATICS

Education is the main way to form character building all people in accordance with the constitution. At the time, education was done to form human becoming the full gold generation of Indonesian in the 21st century. History of education noted that education in Indonesian accordance with the philosophy of Ki Hajar Dewantara as Father of education in Indonesian. There are three philosoph that involve all people must know it. It is namely ing ngarso sung tulodo, ing madya mangun karso, and tut wuri handayani. Until now in the 21st century, it is still eminent. It is task in our country to build character in education of the 21st century. It includes five aspects. It is: building human intelligent and well attitude, priority to cooperation than individualism, organizing the literacy of mentality, thinking, feeling, and action, Priority of quality than quantity; and teaching conflict resolution. It is the fifth key of the success of education 21st century. It can be a part in education systems and can be taught by math teacher. It must be passed by the gold generation of Indonesian through education system. Learning mathematic is a part of education system to bring all students knowing development science and technology. Learning mathematic also make all students to critical thinking, consistency, and active. Accordingly, learning mathematic in school give students to build their knowledge, skill, and attitude be better than before