He is a Professor of Science (Physics) Education at Kastamonu University. He has a wide range of research interests, including determining students' grounded mental models or mental models, identifying, designing, and implementing instructions to challenge students' conceptions and using analogies and models, investigating assessment processes, and evaluating curriculums or science textbooks. He is the author of more than 100 papers and acts as editor of the 'Online Science Education Journal' and reviewer for various journals.