This research aims to determine the influence of reciprocal teaching learning aided concept maps to students critical thinking skills in learning biology. The design of the study is a quasi-experimental design with research subjects in class X student of Agricultural Product Processing Technology (TPHP) and class X student of Fishery Products Processing Technology (TPHPi). Differences of the students critical thinking skills in the both class analyzed by using Anacova test. The results showed that there is an positive effect of reciprocal teaching learning aided concept maps to the critical thinking ability of students. The critical thinking of students' in the experimental class (average percentage of critical thinking skills of students 73,36%) was higher than the control group (average percentage of students' critical thinking skills 53,20%). From the results of the study it can be concluded that the application of reciprocal teaching learning aided concept maps can enhance students' critical thinking skills in learning biology.Penelitian ini bertujuan mengetahui pengaruh pembelajaran reciprocal teaching berbantuan peta konsep terhadap kemampuan berpikir kritis siswa pada pembelajaran biologi. Rancangan penelitian yang digunakan adalah rancangan eksperimen semu dengan subjek penelitian siswa pada kelas X Teknologi Pengolahan Hasil Pertanian (TPHP) dan siswa kelas X Teknologi Pengolahan Hasil Perikanan (TPHPi). Perbedaan kemampuan berpikir kritis siswa pada kedua kelas dianalisis menggunakan uji Anacova. Hasil penelitian menunjukkan bahwa ada pengaruh positif pembelajaran reciprocal teaching berbantuan peta konsep terhadap kemampuan berpikir kritis siswa. Kemampuan berpikir kritis siswa pada kelas eksperimen (rata-rata persentase kemampuan berpikir kritis siswa 73,36%) lebih tinggi dibandingkan kelas kontrol (rata-rata persentase kemampuan berpikir kritis siswa 53,20%). Dari hasil penelitian disimpulkan bahwa penerapan pembelajaran reciprocal teaching berbantuan peta konsep dapat meningkatkan kemampuan berpikir kritis siswa pada pembelajaran Biologi
