In this paper will be work about Investigative Practical Class on the mixture separation process in opposition of traditional teaching methods, in which the students are only spectator or repeat conceits. Whit objective to arouse students’ interest in being insert in the learning process as active agents in the search for answer problems, in this case, about the mixture separation and making possible learning. Being carried out in two class of 1 st of high school at the Dom Pedro I School, in the Para stated, Brazil. In the methodology was used qualitative methods, in which it is possible to analyses the individual and collective perspectives of the students and of researcher. The results showed the larger interest of students with base on the investigative practice. In addition, the data collected demonstrated significant learning for students, with excellent repercussions. On the order hand, in the question resolution of the ENEM (National High School Exam) about the mixture separation was constated it is necessary more time of the study for the students.
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