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Abstract-The main objective of this study was to obtain the information regarding freshman students' alternative conceptions, the characteristics of conflict cognitive strategy and the profile of students' conceptual change in Voltaic Cell, which were further elaborated into six determined indicators. The subject consisted of fourteen freshman students of Chemistry Programme. This study was conducted into three stages, which were (1)pre-test, (2)cognitive conflict instruction and (3) post-test. Students' conceptions profile were classified into three categories based on Appleton, 1999 (Rolka, 2007), which were identical fit, approximate fit and incomplete fit. Based on the data obtained from the pretest, students generally performed the incomplete fit and approximate fit for all indicators, but only a few performed the identical fit. The characteristics of conflict cognitive strategy that is able to facilitate students' conceptual change was those that destabilize students' inaccurate existing conception through contradictory experiences (disequilibrium), followed by teacher's intervention that enables the students rich the reequilibrium. After the instruction, students generally performed the raising conception profile, but some did not perform conceptual change and only a few performed the lowering one.

Tujuan artikel ini mendeskripsikan langkah pengemabangan profesionalisme guru di SMP BPI Bandung. Peningkatan profesionalisme guru IPA yaitu kemampuan berpikir kritis, kolaboratif, kreatifitas dan komunikasi. Hal tersebut menarik untuk dikaji ulang dan dibentuk menjadi kecakapan guru dalam pembelajaran. Hal tersebut sangat penting karena guru merupakan agen perubahan generasi penerus yang akan datang. Kebermutuan anak-anak sekarang dan masa yang akan datang tergantung pada keberhasilan pendidikan yang dilakukan. Pembelajaran yang dengan guru yang professional akan menghasilkan pembelajaran yang bermutu. Metode yang digunakan merupakan diskeptif kualitatif.  Hasil Penelitian memperoleh dengan adanya kegiatan perencanaan yang baik maka akan menghasilkan pengimplementasian pembelajaran berjalan dengan lebih baik dan bermutu. Kesimpulannya pengembangan profesionalisme guru IPA SMP BPI di Bandung yang cocok diterapkan yaitu pengembangan komunitas belajar guru melalui metode lesson study, adanya peningkatan keprofesionalisasime guru, kesiapan, percayadiri dan mau menerima kritikan. Perencanaan pembelajaran yang dilakukan menyesuaikan siswa supaya dapat belajar. Lesson desain tersusun pada tahap perencanaan yang tersusun simple dan sistematis. Selanjutnya pengimplementasian lesson desain dalam pembelajaran yang memfasilitasi siswa belajar, guru lebih percaya diri dan siap dalam pembelajaran. Tahap terakhir refleksi bersama untuk memperbaiki dan belajar bersama melalui pembelajaran yang dilakukan.

No abstract

MGMP is a community of teachers to always learn (long life learning). Rapid development of the times requires the teacher to participate in the pursuit of knowledge. Lifelong learning is the teacher's obligation to generate knowledge. This is necessary because the teacher is a facilitator of students to gain knowledge. In line with that, teachers are expected to master every change process so students can also face global challenges. These results indicate that the majority of teachers who come to MGMP IPA Bogor District civil servants Teachers. MGMP activities are a place that facilitates teachers' mutual learning together. MGMP members consist of various teachers from different schools. The results show the MGMP majority forum of senior teachers. Senior Teachers are expected to guide junior and mediator teachers to learn from one another. The results of the study concluded that continuing professional development needs to be developed, then content, then creativity, ICT and finally SK and KD to improve teacher competence. The activity steps are arranged to help activate and optimize activities, namely by self-development, scientific publications, and scientific work in the Bogor District MGMP.