Penelitian ini merupakan Penelitian Tindakan Kelas (Classroom Action Research) dengan model Kurt Lewin dan model Kolaboratif yang dilaksanakan dalam dua siklus. Setiap siklus diawali tahap persiapan kemudian dilanjutkan tahap pelaksanaan siklus yang terdiri dari perencanaan tindakan, pelaksanaan tindakan, observasi dan evaluasi, serta refleksi. Subjek penelitian adalah siswa kelas VIII D SMP Negeri 1 Simo Tahun Pelajaran 2013/2014 sebanyak 30 siswa dengan penelitian dikhususkan  pada materi pokok Alat-alat Optik. Data diperoleh melalui pengamatan, wawancara dengan guru, ulangan harian, kuesioner dan kajian dokumen. Teknik analisis data yang digunakan adalah teknik kuantitatif dan kualitatif.
Hasil analisis data dan pembahasan dapat disimpulkan bahwa: Penerapan model pembelajaran Joyful Learning dapat meningkatkan kemampuan kognitif dan kemampuan afektif siswa kelas VIII D SMP Negeri 1 Simo Tahun Pelajaran 2013/2014 pada materi pokok Alat-alat Optik. Hal ini dapat dilihat dalam pelaksanaan siklus I dan siklus II. Peningkatan kemampuan kognitif pada siklus I sebesar 70 % kemudian pada siklus II meningkat menjadi 80 %. Jadi, kemampuan kognitif siswa telah mencapai target keberhasilan yaitu ketuntasan hasil belajar Fisika siswa sebesar ≥ 75 %. Sedangkan hasil angket  kemampuan afektif Fisika siswa menunjukkan bahwa  peningkatan pada siklus I sedangkan rata-rata indikator kemampuan afektif Fisika siswa  mencapai 77,55 %  dan  pada siklus II  meningkat menjadi 79,62 %. Hasil observasi menunjukkan hal yang serupa yaitu terdapat peningkatan  kemampuan afektif  Fisika siswa mulai dari pra siklus mencapai  49,89 %   menjadi 69,67 % pada siklus  I, siklus II mencapai 76,95 %. Target  penelitian  untuk indikator kemampuan afektif siswa adalah 75 %.

This aim of research are to improve the student cognitive and affective aspect at VIII D of Junior High School at Simo academic year 2013/2014 on subject matter  Optical Instruments.
This research used a Classroom Action Research with Kurt Lewin and Collaborative model that was held in two cycles. The cycles were started by preparation phase and then were continued execution phase that consist of action planning, action, observation, evaluation, and reflection. The research subject was VIII D of Junior High School Simo student at academic year of 2013/2014, its was consist 30 students in the class of the subject matter Optical Instruments. The techniques of collecting data were observation, interview with teacher, test, questionnaire and documentation. Techniques of data analysis were qualitative and quantitative.
Based on result this research, it can be concluded that: application model Joyful Learning With Tasks Giving Method can improved students cognitive and affective aspect at VIII D of Junior High School Simo academic year of 2013/2014 on the subject matter Optical Instruments. Based on the first cycle and second cycle, the result of cognitive aspect had 70 % to 80 %. It means that the cognitive aspect had success for the target of Physics student learning outcomes completeness of ≥ 75 %. The results of the questionnaire affective aspect reached 77.55 % to 79.62 %. Its means that there was incresed from first cycle to second cycle. The observations of affective aspect showed as similar thing that an increased affective aspect students from pre-cycle reached 49.89 % to 69.67 % in the first cycle and then the second cycle reached 76.95 %. Based on the targeted research for indicators of affective abilities of students is 75 %.