This research aims at: 1) identifying whether the optimalization of MF in CTL can enhance students' writing skill of recount text, and 2) describing the classroom climate when MF in CTL is applied in writing class of the eighth grade students of SMP Negeri 3 Colomadu Karanganyar. This research was conducted in two cycles from March 16th to June 6th 2012. The research data were collected by using observation, questionnaire, interviews, field notes, photographs, and tests. The qualitative data were analyzed through assembling the data, coding, comparing, building interpretations, and reporting the outcomes. In the pre-test, the students' mean score was (66.70), the mean score of post-test 1 was (69.78), while in post-test 2 the mean score was (79.83). The students' enhancements in classroom climate were: 1) The students were more active during the writing class; 2) They more participated in asking and answering teacher's questions. This research aims at: 1) identifying whether the optimalization of MF in CTL can enhance students' writing skill of recount text, and 2) describing the classroom climate when MF in CTL is applied in writing class of the eighth grade students of SMP Negeri 3 Colomadu Karanganyar. This research was conducted in two cycles from March 16th to June 6th 2012. The research data were collected by using observation, questionnaire, interviews, field notes, photographs, and tests. The qualitative data were analyzed through assembling the data, coding, comparing, building interpretations, and reporting the outcomes. In the pre-test, the students' mean score was (66.70), the mean score of post-test 1 was (69.78), while in post-test 2 the mean score was (79.83). The students' enhancements in classroom climate were: 1) The students were more active during the writing class; 2) They more participated in asking and answering teacher's questions.