In the context of the 1st interdisciplinary unit of the PYP Comment le monde fonctionne, Grade 6 students of Psychico College French Department are doing research on French inventors. With a presentation by Mrs C. Karavalaki, they enriched their knowledge about Louis Braille and the Braille system. They had the opportunity to understand how the alphabet was created, to see texts written in Braille and finally, to write their name using this alphabet.