Helendra, Helendra

• Vol 4, No 2 (2019): Atrium Pendidikan Biologi - Articles
  The Effect of Cooperative Learning Models with Talking Stick Method on Students’ Science Learning Competencies Class VII of SMPN 23 Padang
  Abstract  Fullpaper
• Vol 5, No 2 (2020): Atrium Pendidikan Biologi - Articles
  The Effect of the Assignment to Make a Mind Map Before the Implementation of Discovery Learning on the Knowledge Competencies of Class VII SMPN 2 Lubuk Alung
  Abstract  Fullpaper