Instagram, as a popular social networking platform, allows users to share photos and videos with
other users. This research investigated the effect of Instagram-assisted instruction on the learning
of collocations and colligations1 by Iranian EFL learners. Fifteen participants who were selected
based on a language proficiency test took part in this research. The participants were first pre-tested
on their collocational and colligational knowledge. The collocational and colligational items that
were answered incorrectly by 50 percent or higher were selected for treatment. Afterwards, the
researchers prepared nine videos, containing 41 collocational and colligational items, and posted
them on Instagram during a five- week instruction period. The participants were asked to watch
the videos, and carry out the related exercises in the caption section of the post, through the usage
of the comments sections on Instagram. After posting all the videos, the pre-test was run again as
a post-test. The results indicated a significant difference between the mean scores of the pre- and
post-test, highlighting the fact that the treatment had been effective. In addition, semi-structured
interviews were conducted with 10 participants in order to find out their attitudes towards
language learning via Instagram. The learners indicated a positive attitude towards using Instagram
for their language learning purposes. In conclusion, the research showed that Instagram-assisted
instruction, when properly implemented and designed, can be beneficial to the development of
second language learning.