. Increased activity of learners in the Natural Sciences learning using inkuri in fourth grade Elementary School 04 Bakul Kapuas Hulu . This study aims to determine the increase in the activity of learners using the method of inquiry . The method used is descriptive method of research is a form of action research . The results show there is an increase in physical activity from baseline 28 % kesiklus III 71 % increase 43 % category " Medium " , there is an increase in mental activity from baseline 25 % kesiklus III 50 % increase 25 % category of " Low " , the emotional activity there is an increase of kesiklus III baseline 23.67 % 40.33 % 64 % increase category " Medium " . Based on these data , shows that there is increased activity of learners in the learning of Natural Sciences by using inquiry method in class IV Elementary School 04 Bakul Kapuas Hulu in the high category
