Im not like the smartest but i try.
1) read up ur lesson b4 the class. kinda cliche. U dont actually have to try hard to understand. Just skim through n note the part u dont get. So ull like be anticipated 4 when ur teacher/ lecturer get 2 that part. Then u automatically focus cuz u hyped urself up
2) make pretty notes. Doesnt work 4 everyone bu......
