Learn Turkish: Mankenler, kameraya bakarak poz verdi. - The fashion models posed by looking at the camera.

It uses the suffix -arak, which is the focus of this lesson. When added to the verb root bak- (to look), it creates an adverb describing how the main action was done. It translates to "by looking" or "while looking".

Why do we add -ya to the end of kamera?

The verb bakmak (to look) requires a direction, so the object being looked at takes the dative case (to/towards). Since kamera ends in a vowel, we use the buffer letter -y- before adding the dative suffix -a, resulting in kameraya.

Why does the sentence use verdi for "posed"?

In Turkish, posing is expressed with the compound verb poz vermek, which literally means "to give a pose". Here, verdi is the simple past tense of vermek (to give).

Since mankenler is plural, shouldn't the verb be verdiler instead of verdi?

When a plural subject is already clearly stated in the sentence, making the verb plural is optional, even for people. Saying poz verdi is perfectly natural and common here, though poz verdiler would also be grammatically correct.