Bayan waɗannan tafiye-tafiye, ta sami kwarewa a cibiyar koyarwa ta jami'a.

After these trips, she gained expertise at the university's teaching center.

Breakdown of Bayan waɗannan tafiye-tafiye, ta sami kwarewa a cibiyar koyarwa ta jami'a.

• a: at
• na: of
• bayan: after
• jami'a: the university

Questions & Answers about Bayan waɗannan tafiye-tafiye, ta sami kwarewa a cibiyar koyarwa ta jami'a.

In the phrase Bayan waɗannan tafiye-tafiye, how does bayan work, and how is it different from baya or daga baya?

Bayan means after when it is followed by a noun phrase. So Bayan waɗannan tafiye-tafiye = After these trips.

• bayan + X → after X (a specific period or event)
  
  • Bayan aiki = after work
  • Bayan wannan rana = after that day

Compare:

• baya (without -n) usually means back/behind or, in time, in the past:
  
  • a baya = in the past / previously
• daga baya = later / afterwards, more like a general “later on”, not tied to a specific noun phrase:
  
  • Zan yi maka bayani daga baya = I’ll explain to you later.

So in this sentence, bayan is correct because it directly introduces the time expression waɗannan tafiye-tafiye.

What exactly does waɗannan mean, and can it go after the noun instead of before it?

Waɗannan means these (plural demonstrative, near the speaker).

• wannan = this (singular)
• waɗannan = these (plural)

In Hausa, waɗannan normally comes before the noun:

• waɗannan tafiye-tafiye = these trips

You would not normally say *tafiye-tafiye waɗannan.
If you want a post‑noun demonstrative, Hausa uses nan/can instead:

• tafiye-tafiyen nan = these trips (here)
• tafiye-tafiyen can = those trips (over there)