Prof. Birgit Pepin has a large trajectory as an excellent mathematics education researcher. Her contributions cover a number of areas, including teacher professional development, research and innovation in the field of mathematics curriculum, and mathematics teaching and learning. She was the founder of NW 24 Mathematics Education Research in 2008. Her mastery has opened opportunities for young researchers in mathematics education research. Her work contributed significantly to the development of the NW 24, creating a space in ECER for mathematics educators and researchers to come together and discuss scientific evidence to improve our knowledge about mathematics teaching and learning.