ABSTRAK
Tujuan penelitian ini adalah untuk mengetahui (1) Pelaksanaan pembelajaran IPA kelas IV melalui model pembelajaran CTL dapat meningkatkan Aktivitas belajar  siswa di Sekolah Dasar Negeri 3 Bacin Kecamatan Bae Kabupaten Kudus. (2) Model Pembelajaran CTL dapat meningkatkan prestasi prestasi belajar siswa kelas IV SD 3 Bacin Kecamatan Bae Kabupaten Kudus tahun ajaran 2014/ 2015.
Penelitian ini merupakan Penelitian Tindakan Kelas dengan strategi penelitian deskriptif kualitatif. Metode pengumpulan data menggunakan wawancara mendalam, observasi partisipasi, dan dokumentasi. Analisis data menggunakan model analisis interaktif.  
Hasil penelitian menunjukkan bahwa (1) Aktifitas siswa pada proses pembelajaran dari siklus I sampai dengan siklus III mengalami peningkatan, dengan model pembelajaran Contextual Teaching and Learning. Aktifitas siswa diamati selama proses pembelajaran, (2) Hasil penelitian tindakan kelas menunjukkan pelaksanaan model pembelajaran Contextual Teaching and Learning dapat meningkatkan aktifitas dan prestasi belajar IPA Siswa kelas IV SD Negeri 3 Bacin Kecamatan Bae, Kabupaten Kudus, kompetensi dasar Menyimpulkan hasil percobaan bahwa gaya (dorongan dan tarikan) dapat mengubah gerak suatu benda, mengalami peningkatan cukup signifikan di setiap siklusnya. KKM yang ditentukan di SD Negeri 3 Bacin khususnya pada mata pelajaran IPA adalah 70, (3) Sebelum penerapan model pembelajaran Contextual Teaching and Learning menunjukkan ketercapaian klasikal kurang dari 85% sehingga peneliti berencana mengadakan penelitian tindakan kelas untuk memperbaiki kondisi tersebut. Dari hasil siklus I, siklus II, dan siklus III mengalami peningkatan prestasi belajar dan aktifitas siswa. Selain peningkatan prestasi belajar, peningkatan juga terjadi pada kemampuan guru dalam mengelola pembelajaran
Kata Kunci: Aktivitas, Prestasi hasil belajar, Model Pembelajaran Contextual Teaching and Learning (CTL), Mata Pelajaran IPA.
ABSTRACT
The purpose of this study was to determine (1) Implementation of science subject teaching of fourth grade students Through CTL Model approach can increase the Activite to learn.: (2) Through CTL Model approach can increase student achievement of learning outcomes for fourth grade students of Elementary School 3 Bacin Bae Kudus.
This study is a Classroom Action Research with qualitative descriptive research strategy. Methods of data collection are using in-depth interviews, participant observation, and documentation. Analysis of the data is using interactive model.
The results showed that (1) the active participation of students in the study showed an increasing. CTL learning model trains students to discuss, give opinions and train activity students to work. Student activity observed during the learning process, (2) The results demonstrate the implementation of a class action learning model Contextual Teaching and Learning can improve the activity and learning achievement fourth grade students of Elementary School 3 Bacin Bae Kudus, basic competence conclude the results of experiments that force (push  and  pull) can alter the motion of an object, increased significantly in each cycle. KKM specified in Elementary School 3 Bacin Bae Kudus, especially in science subjects is 70, (3) Before to the application of learning models Contextual Teaching and Learning showed classical achievement of less than 85% so that the researchers plan to conduct action research to improve the condition. From the results of the first cycle, second cycle and third cycle increased learning achievement and student activities. In addition to increased student achievement, an increase also occurred in the teacher's ability to manage learning.
Keywords: Activity, Study Prestation , Learning Model CTL, Science Subject.