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Kees Hoogland is a professor of Mathematical and Analytical Competence of Professionals at the University of Applied Sciences Utrecht in the Netherlands. Kees has worked as mathematics teacher, teacher educator, researcher, textbook author and international consultant. He is a member of the OECD Numeracy Expert Group for the second cycle of PIAAC and former project leader of the European Union Erasmus+ projects Common European Numeracy Framework and Numeracy in Practice.

Dr. Anita N. Alexander began working as a senior researcher in numeracy and Associate Professor within the Mathematical and Analytical Competencies of Professionals research group at HU University of Applied Sciences Utrecht in June 2024. She is interested in improving the mathematical literacy and mindset of K–12 educators and university instructors, and recently completed a two-year case study with undergraduate and graduate mathematics students to inspire the next generation of mathematics professors, to move away from the culture of passive lecture toward a classroom environment that promotes inquiry, discourse and collaboration. She has extensive experience implementing Continuing Professional Development (CPD) in mathematics education, and is currently developing workshops and professional development sessions on improving numeracy in adult and vocational education, along with translanguaging professional development in public and international schools.

Dr. ir. Lonneke Boels has been a senior researcher in the Mathematical and Analytical Competence of Professionals research group at HU University of Applied Sciences since 2022, where she holds the position of acting professor since May 2023. She researches how mathematical and analytical competencies, including numeracy and basic competence, can be acquired by citizens, students and professionals. She specialises in adult, vocational and foundational education and is the leader of a European project in 11 countries, where lesson materials and professional development materials were tested with and by teachers of adult learners. In addition, research was conducted and summarised in four white papers.

Lonneke taught mathematics in Grades 7–12 for almost twenty years and had her own company in remedial teaching and tutoring arithmetic and mathematics for thirteen years. Prior to that, she worked in the commercial sector. She studied electrical engineering at TU Delft, where she also received a teaching degree.

Ariana-Stanca Vacaretu is a mathematics teacher who teaches high school students at Colegiul National Emil Racovita in Cluj-Napoca, Romania. She has been a Scientix ambassador since 2016 and promotes inquiry-based learning, scientific literacy and transversal skills through STEM subjects.

Hubert PROAL is a mathematics teacher at Val de Durance high school in Pertuis, France. He is a member of the MATh.en.JEANS association, which coordinates more than 200 research workshops between students and university researchers. He is also a member of the Institut de Recherche sur l'Enseignement des Sciences de Marseille and works with the PION group on WIMS exercise computers.

Michael Fuchs is a former university lecturer, teaching expert and teaching award winner at Graz University of Technology in Austria. He is co-founder of the educational game start-up edventure Studios and has been a part-time teacher at a technical school for two years. In an attempt to build new bridges between schools and universities, edventure Studios tries to mediate and find best practice examples for successful transitions between different educational paths.

Moderator of the eTwinning featured group ������Ƶing for sustainability and green skills

Anita Šimac completed her education in the Department of Mathematics at University College London, one of the oldest universities in England, and one of the world’s leading research universities. Since 2011. she has been living in Zadar, Croatia teaching  mathematics at the Petar Preradović Elementary School.