The mathematical input in text editors by disabled students is demanding both at the functional level (motor disorder) and at the cognitive level (attention, visual-spatial, memory) and generates fatigability little productive and effective gain. To reduce these demands, HandiMathKey, a mathematical keyboard software was designed by applying a usercentered method. The aim of paper is to report how different disabled students have appropriated HandiMathKey in a middle school by an observation carried out by a multidisciplinary team. The hypothesis is that HandiMathKey can be learned and used by all students with disabilities
