Mouhamed Sall stepped to the chalkboard with a glance and quick question in sign language to an assistant. Then he solved the exercise to the silent approval of his classmates, who waved their hands in a display of appreciation. ⌘ Read more
Mouhamed Sall stepped to the chalkboard with a glance and quick question in sign language to an assistant. Then he solved the exercise to the silent approval of his classmates, who waved their hands in a display of appreciation. ⌘ Read more