Without more context, it's hard to know what to suggest. How old is your son? Is English your first language? What does his teacher suggest? What kind of trouble does he have -- can you be more specific?
He is 15 years and has dislexia, he went to a school for children with this challenge, but the school is closing, It's really hard because complex subjects in math looking at pictures he can figure out problems but his short term memory is working against him. He reads at a 4th grade level and is going to the 9th grade and english is his first language. He has a determined attitude toward learn