Amal, who is 10, can think about things in a way that his 6-year-old brother yovani can't. jamal can reason logically and perform , mental actions that can be reversed. last week, jamal and yovani's mother realized that both the cups she had poured their juice into were chipped. she therefore had to pour the juice into plastic cups, which were larger. when this happened, yovani said, "we have more jui