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Abstrak. Kemampuan pemahaman konsep matematis siswa dalam pembelajaran matematika diharapkan dapat berkembang secara optimal. Namun, kemampuan pemahaman konsep matematis siswa di SMP Negeri 13 Padang belum berkembang secara optimal. Hal ini terlihat dari hasil belajar siswa dimana hanya terdapat dua kelas dari delapan kelas yang memiliki jumlah siswa yang tuntas lebih tinggi daripada siswa yang tidak tuntas. Kriteria Ketuntasan Minimal (KKM) yang ditetapkan oleh sekolah yaitu 75. Pada proses pembelajaran matematika di SMP Negeri 13 Padang, siswa masih belum terlibat aktif dalam proses pembelajaran. Salah satu upaya untuk meningkatkan kemampuan pemahaman konsep matematis siswa adalah dengan menerapkan model Contextual Teaching and Learning (CTL). Penelitian ini menunjukkan bahwa pemahaman konsep matematis siswa yang belajar dengan menggunakan model CTL lebih baik daripada siswa yang menggunakan pembelajaran konvensional. Kata Kunci: Pemahaman konsep matematika, pembelajaran matematika, model Contextual Teaching and Learning

This study is titled Teacher Professionalism in Islamic Religious Education during the Covid19 Pandemic at Baitul A'la Islamic Primary School in Lubuklinggau. The adoption of e-learning certainly requires teachers to be professional in performing their tasks and preparing for different sections. The research was carried out at Baitul A'la Islamic Primary School in Lubuklinggau using field research type, qualitative approach, data collection with interview, observation and documentation techniques. Check data source reliability, triangle processing time and technique. To summarize, first, teachers are committed to students and their learning process, teachers are masters of subject topics, teachers monitor student learning outcomes, teachers are able to systematically and teachers are part of a learning community in their professional setting. Online learning, which schools have had to do due to the COVID19 outbreak, needs to be balanced with the deeper role of the teacher. Teacher performance is required as a form of professionalism. Therefore, there is a need to empower teachers by developing four key skills that already exist to deal with online learning today. The skills that emerged from these developments were literacy and science and technology skills, classroom management skills, and social and communication skills.