This has the additional advantage that students can work individually on what seems to be most necessary for them.

individually 是形容词 individual 的副词形式，由 individual（个别的）加上后缀 -ly 构成。individual 来自拉丁语 individuus（不可分割的），由 in-（不）和 dividuus（可分割的）组成。 individually 表示"各自地、个别地"，强调每个人独立完成或针对个人需求进行。