scholarly journals Development of Model-Based Learning Devices Cooperative Type Student Teams Achievement Division (STAD) Assisted by Geogebra to Improve Abilities Mathematics Problem Solving of Class X Students Man 1 Deli Serdang

2020 ◽  
2021 ◽  
Vol 1778 (1) ◽  
pp. 012027
Author(s):  
Gunawan ◽  
Supriatna ◽  
Eka Setyaningsih ◽  
Rizki Fera Apriana

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