PhD Candidate, Universitas Pendidikan Indonesia.

Tryastuti Irawati Belliny Manullang is a PhD candidate in the Special Needs Education Program at Universitas Pendidikan Indonesia. She has experience teaching preschool students and special needs students. She is actively involved in Continuous Professional Development through Lesson Study in West Java and the Innovation Lab at Universitas Pendidikan Indonesia. Her research focuses on inclusive education and special education implementation in Indonesia.