حل تشریحی سوال شماره 14 زبان عمومی (انگلیسی)

For 20 years, children have been treated (11) ----------- all sorts of programs on television which are supposed to help them become better at skills such as reading and math. these programs have presented (12) ---------- such as counting and recognition of letters as nothing but fun, (13) -------- by such things as rainbows and jumping frogs. (14) --------- no improvement in children's abilities in literacy and numeracy (15) ---------- . These fun ways of teaching such skills don't seem to work.