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Mobile learning (m-learning) refers to learning processes supported by the use of mobile technology, whose key feature is the mobility of learners, which may be distant from each other and also from formal education spaces such as classrooms, training rooms, or workplaces (Wang, Wu & Wang, 2009; Ferreira et al., 2013; Fattah, 2015). M-learning is highly situated, personal and collaborative, because individuals can interact with peers (and teachers) using their personal devices, according to their needs, due to the connectivity allowed by mobile technology, in different times and places (Naismith et al., 2004; Ferreira et al., 2013). Previous researchers have explored the affordances of m-learning (Looi et al., 2009; Liaw et al., 2010; Ferreira et al., 2013; Sabah, 2016; Turner, 2016).
Affordance is the relational nature of technology and user interaction. Educational affordances are defined as characteristics of an educational resource that indicate if and how a particular learning behavior could possibly be enacted within the context under consideration (Bower & Sturman, 2015). It is an important concept to understand the adoption of Information and Communication Technology (ICT) in education since it is centered on the users’ perceptions, in what they realize as possibilities and potentials of technology in helping them to learn.
Mobile Instant Messaging (MIM) applications can also be used in m-learning practices (Zydney & Warner, 2016), making it more interactive and engaging (Shen, Wang & Pan, 2008; Gan & Balakrishnan, 2017). MIM is a global phenomenon; it has evolved rapidly, and has amassed millions of users, allowing them to send and receive messages, pictures, videos, and audios for free, and most of them (e.g.: KakaoTalk, WhatsApp®, and LINE) work on practically every smartphone and mobile platforms (Oghuma et al., 2016). They also provide information about the status of users and support synchronous interactions, which is useful to allow for intimate contact and sense of presence (Rambe & Bere, 2013; Tang & Hew, 2017)).
Considering that, higher education institutions have started adopting mobile technology to cope with their students’ needs and expectations (Han & Shin, 2016; So, 2016). WhatsApp® is an MIM application that has been widely used worldwide, and has no cost to be used, only depending on access to a smartphone with an Internet connection. Created in 2009, WhatsApp® has reached 1 billion users worldwide in 2016. However, there is still little research on the educational affordances of MIM - such as Whatsapp® - in higher education. Even m-learning as a broader concept is a relatively recent phenomenon; researchers found mixed results regarding the effects of mobile devices for education, and few studies have addressed best practices in the use of mobile devices for teaching and learning, and the effectiveness of these practices (Sung, Chang & Liu, 2016).