This is the French-language edition of the Sandpaper Numbers, identical in construction and Montessori function to C021 but printed with French numeral nomenclature where applicable, intended for French-immersion or francophone primary classrooms. It ensures that children working in a French-language environment encounter consistent linguistic framing across all materials from the start of the mathematics sequence. If your program follows a French curriculum or serves a bilingual community, this version keeps your materials coherent with your language of instruction.