Abacus
Carmen Willings | teachingvisuallyimpaired.com | February 21, 2026
The Cranmer Abacus provides students who are blind or visually impaired with an efficient and accessible method for performing mathematical calculations. This tactile tool allows students to represent numbers, perform operations, and solve problems independently without relying on visual materials. Abacus instruction supports the development of number sense, mental math, and problem-solving skills that are essential for academic success and daily living.