This manual is an instructional resource to build Pre-Number Skills in children with hearing impairment. This module introduces foundational mathematical concepts—such as classification, seriation, and one-to-one correspondence—which are essential precursors to formal arithmetic. It provides specialized teaching strategies and visual activities designed to overcome the conceptual gaps often faced by children with limited auditory exposure. By establishing these early logical-mathematical frameworks, the manual ensures that children with hearing loss are better equipped for the quantitative demands of primary school education.