<![CDATA[This research aimed to find out the influence of guided discovery learning model towards students mathematical representation ability and self confidence. The population of this research was all students of grade 8th of SMP Negeri 5 Bandarlampung in academic year of 2016/2017 which was distributed into 20 classes and using the purposive sampling technique, it was selected students of VIII J and VIII K class as samples of this research. The design which was used was posttest only control group design. The conclusion of this research was guided discovery learning model generally did not affect towards students mathematical representation ability and self confidence, but students mathematical representation ability who were taught by guided discovery learning model were higher than students mathematical representation ability who were taught by conventional learning. Penelitian ini bertujuan untuk mengetahui pengaruh model guided discovery learning terhadap kemampuan representasi matematis dan self confidence siswa. Populasi penelitian ini adalah seluruh siswa kelas VIII SMP Negeri 5 Bandarlampung tahun pelajaran 2016/2017 yang terdistribusi dalam 20 kelas dan menggunakan teknik purposive sampling, terpilih siswa kelas VIII J dan VIII K sebagai sampel penelitian ini. Desain yang digunakan adalah posttest only control group design. Kesimpulan penelitian ini adalah model guided discovery learning secara umum tidak berpengaruh terhadap kemampuan representasi matematis dan self confidence siswa, namun kemampuan representasi matematis siswa yang mengikuti model guided discovery learning lebih tinggi daripada siswa yang mengikuti pembelajaran konvensional.Kata kunci: guided discovery learning, representasi matematis, self confidence]]>
