Observation is the main monitoring tool teachers use to assess learning and instruction. Observation is recording and describing behavior as it occurs in classroom. Its purposes are to provide objective data about the quality of students’ performances (drawing a picture or singing) and the quality of the processes and methods students use in completing tasks (giving feedback for their actions so that they can improve their strategies). One problem with observing students is the observer’s own subjectivity. This problem can be solved by using structured coding systems which categorize each group behavior into an objectively definable category (Johnson, Johnson, & Holubec, 1998). 


           Johnson, D., Johnson, R.& Holubec, E. (1998).Cooperation in the classroom. Boston: Allyn and Bacon.