When do blind children begin to learn Nemeth code? Is Nemeth introduced gradually alongside math or do young learners exclusively use literary UEB until they reach a certain complexity of math? For example, would blind students learning numbers learn numbers in just UEB or in both UEB and Nemeth? What about learning addition, subtraction, fractions, multiplication, division, simple equations, superscripts, and subscripts?
Oh also US rules for signage is to use contracted in general.