Abstract. The Implementation of Cooperative Learning Model Type Jigsaw In To The State of Matter and Its Changes To Physics Learning Result of Student In SMP Negeri 21 Makassar . Skripsi.This research was a pre-experimental that aims to obtain information on physics learning result of student grade VII of SMP Negeri 21 Makassar it had reached KKM standard or not after being taught by cooperative learning model type Jigsaw through a constructivist approach. The population as well as samples in this research as many has 30 students who are determined through a random grade with One Shot - Study Design. The research instrument that is used was studying physics tests that fill the criteria valid with 0.361 reliability as much as 20 item tests of about 25 item tests. Data analysis techniques that is used in this research was descriptive statistics. The results of descriptive analysis on the cognitive aspects shows the average score of the grade students learn physics grade VII SMP Negeri 21 Makassar after being taught by cooperative learning model type Jigsaw through a constructivist approach for 81.3, the psychomotor aspects of 76, and the affective aspects of 73.93. Meanwhile, Inferential analysis showed that the cooperative learning model type jigsaw through a constructivist approach contributes to the achievement of the minimum criteria for competence (KKM). Abstrak. Penerapan Model Pembelajaran Kooperatif Tipe Jigsaw p ada Materi Wujud Zat d an Perubahannya Terhadap Hasil Belajar Fisika Peserta Didik SMP Negeri 21 Makassar . Penelitian ini adalah penelitian pra eksperimen yang bertujuan untuk memperoleh informasi mengenai hasil belajar fisika peserta didik kelas VII SMP Negeri 21 Makassar telah mencapai standar KKM atau belum setelah diajar dengan model Pembelajaran kooperatif tipe jigsaw melalui pendekatan konstruktivistik. Populasi serta sampel dalam penelitian ini sebanyak 30 peserta didik yang ditentukan melalui acak kelas dengan One Shot-Study Design. Instrumen penelitian yang digunakan adalah tes belajar fisika yang memenuhi kriteria valid dengan realibilitas 0,361 sebanyak 20 butir dari 25 butir soal. Teknik analisis data yang digunakan dalam penelitian ini adalah statistik deskriptif. Hasil analisis deskriptif pada aspek kognitif menunjukkan nilai rata-rata hasil belajar fisika peserta didik kelas VII SMP Negeri 21 Makassar setelah diajar dengan model Pembelajaran kooperatif tipe jigsaw melalui pendekatan konstruktivistik sebesar 81,33, aspek psikomotorik 76 dan aspek afektif 73,93. Sementara itu, Analisis inferensial menunjukkan bahwa model Pembelajaran kooperatif tipe jigsaw melalui pendekatan konstruktivistik berkontribusi terhadap pencapaian nilai Kriteria Ketuntasan Minimal (KKM). Kata Kunci: Model Pembelajaran Kooperatif Tipe Jigsaw, Hasil belajar Fisika Peserta didik