Breakdown of onaji kyoukasho o tsukatte mo, hito ni yotte kangaekata wa chigaimasu.
Questions & Answers about onaji kyoukasho o tsukatte mo, hito ni yotte kangaekata wa chigaimasu.
使っても is the pattern Vて + も, which often means:
- even if ...
- even though ...
- although ...
So:
In this sentence, it connects to the next idea:
- 同じ教科書を使っても、...違います
- Even if they use the same textbook, ... things are different
The nuance is concessive: you might expect the same textbook to lead to the same result, but that is not necessarily true.
同じ is a special word. It can directly modify a noun:
- 同じ教科書 = the same textbook
- 同じ人 = the same person
- 同じ考え = the same idea
You do not use な here:
- natural: 同じ教科書
- unnatural: 同じな教科書
You also do not need の in this structure.
So 同じ behaves a little unusually compared with regular な-adjectives.
