Defri Ahmad

Design research on calculus: Students’ journey in learning definition of definite integral

Fridgo Tasman, Suherman, Defri Ahmad, 2020 .

Paper Development of Actuarial E-learning Based on Android Applications

Suherman, Defri Ahmad, Meira Parma Dewi, 2018 .

The use of GeoGebra to help students gain better understanding to definition of definite integral

Fridgo Tasman, Suherman, Defri Ahmad, 2019, Journal of Physics: Conference Series.

Kesulitan Mahasiswa Dalam Mengkoneksikan Sigma, Area, dan Definisi Integral Tentu Secara Geometri

Suherman Suherman, Fridgo Tasman, Defri Ahmad, 2018 .

Pemahaman Mahasiswa Terhadap Integral sebagai Anti Turunan, Suatu Desain Riset pada Kalkulus Integral

Fridgo Tasman, Defri Ahmad, 2017 .

Visualizing Volume to Help Students Understand the Disk Method on Calculus Integral Course

Fridgo Tasman, Defri Ahmad, F. Tasman, 2018 .

OLYMPIAD MATERIAL DEVELOPMENT FOR IMPROVING OF TEACHER PROFESSIONALISM MGMP SMP REGENCY OF AGAM WEST REGION

Elita Zusti Jamaan, Defri Ahmad, Minora Longgom Nasution, 2018 .

Praktikalitas Media Video Tutorial sebagai Suplemen Digital Learning pada Mata Kuliah Persamaan Diferensial Biasa

Defri Ahmad, Ronal Rifandi, Meria Ultra Gusteti, 2020 .

APLIKASI ROF TOTAL VARIATION MENGGUNAKAN SPLIT BREGMAN UNTUK MENGURANGI NOISE PADA GAMBAR PEMBULUH DARAH KAPILER DALAM JARI MANUSIA

Defri Ahmad, Vita Kusumasari, Mochammad Hafiizh, 2020, Jurnal Kajian Matematika dan Aplikasinya (JKMA).