Are you a team player or a personal pinner? situating pinterest as part of teachers’ online and offline professional learning networks

Pinterest, a popular social networking site, is used as a resource by educators across all grade levels. We take the perspective that Pinterest acts as a professional learning network (PLN) and interrogate the ways that teachers share resources within online/offline PLNs. Eighty-eight teachers responded to a survey that asked about their social media use as well as their sharing of Pinterest resources with their professional colleagues. Building from the media use typology, we developed the Peer-to-Peer Pinterest Sharing Typology to describe types of sharing, finding that most respondents indicated that they did not share resources, others shared if forced to, and some shared as a way to enhance collegial collaboration. This research expands limited empirical work on both Pinterest as a PLN and on how learning and resources from online PLNs cross into school-based ones. This work will be of interest to those who seek to understand how social media sites play a role in teacher professional learning.


Introduction
Educators, in the age of constant communication and instant access to educational resources, are turning to online means such as social media sites to find instructional material. Social media usage by teachers has grown as they seek individualised, on-demand professional development (Prestridge, 2019). One social media site that allows for this is Pinterest, a platform within which people can connect by sharing ideas (i.e., creating posts, called 'pins' and placing them on virtual bulletin boards that are categorised by the user), commenting on other users' pins, repinning pins that appear in the app's feed, and remixing others' ideas to create new pinboards. The majority of users have public pinboards and pins that are shared to users' friends, but pins are also algorithmically selected to appear in feeds that share similarities with other users.
Pinterest has been used since its inception by teachers to enhance their lessons and personal learning. As of 2014, Pinterest was identified as a top-five website for educators and not just for personal use (Rayburn, 2014); in 2017, a national survey of teachers in the USA found that 90 per cent of elementary teachers and over 60 per cent of secondary teachers used Pinterest as a resource for educational content (Opfer et al., 2017). According to Hunter and Hall (2017), 'education-related items are the second-most highly searched resource' on Pinterest (p. 634). Recently, researchers positioned Pinterest as a place to develop content for other educators (Robles Moral & Fernández Díaz, 2021) or as an ideal replacement for in-person professional development (Nixon et al., 2021). Researchers have also interrogated how in-service and pre-service teachers Open Access Lundgren et al. Innov Educ (2021) 3:6 interact with Pinterest content, specifically focusing on the quality of resources that teachers find Gallagher et al., 2019;Hertel & Wessman-Enzinger, 2017;Hu et al., 2018;Sawyer et al., 2019). Rather than wade into the debate of quality of resources on Pinterest, we see a need to investigate how teachers collaborate with their school-based colleagues through Pinterest and if what teachers encounter on Pinterest gets shared with school-based or 'real-life' colleagues.
Teachers are no longer limited to participating in face-to-face professional development experiences or only sharing resources over lunch or during passing periods. With educational resources easily accessible on social media like Pinterest, Facebook, Twitter, Tik-Tok, and Instagram, we must interrogate the ways that teachers share the knowledge they gain online with their colleagues. Digital learning is happening; thus, educational researchers should interrogate how teachers use the social media ecosystem to find and share resources with colleagues so social media can be effectively integrated into professional learning models. Karimi and colleagues (2020) collected usernames and data in an attempt to quantify collaboration and connections among teachers on Pinterest; we take a qualitative approach to such a notion. Knowing how on online connections translate to offline collaboration can, among other things, help support teacher educators and school-based administration in their quest to best utilise the platform and make good use of collaborative planning time. Furthermore, understanding how such sites are used and shared will allow educational researchers and practitioners to integrate them into research and practice. Our aim in this research is twofold: to explicate how teachers share Pinterest-specific educational resources with their school-based colleagues and to describe the ways that teachers' online and offline sharing proclivities are related to their social media typology. Thus, our research questions are as follows: 1. Do teachers share resources they find on Pinterest with school-based colleagues? If so, how? 2. Does the way teachers interact in online/offline worlds align with their social media typology?
We define school-based colleagues for in-service teachers as colleagues at their local schools and for preservice teachers as their peers in their teacher preparation programmes as well as their colleagues in field placement sites. These definitions help us to see how emerging and in-service teachers bring their online knowledge to the offline spaces they occupy.

Professional learning networks
With the demand for improved student outcomes in the age of accountability has come a desire to support the growth of teacher collaboration within schools to foster teacher professional development and learning (Moolenaar, 2012;Vangrieken et al., 2015). Standards across professional education organisations, like the US National Council for the Teaching of English (NCTE) and the International Society for Technology in Education (ISTE), for example, encourage educators to 'collaborate with both colleagues and students to improve practice, discover and share resources and ideas, and solve problems' (ISTE Standards for Educators 4, 2017). Professional Learning Networks (PLNs) offer an expansive vision of teacher collaboration, particularly in an increasingly networked and global environment, and one that can account for how teachers' social media use can inform school-based collaborations.
Professional Learning Networks (PLNs) have been defined in multiple ways. Trust (2012), wrote that PLNs are systems of 'interpersonal connections and resources that support informal learning' (p. 133). Flanigan (2011) identified PLNs as 'online communities that allow the sharing of lesson plans, teaching strategies, and student work, as well as collaboration across grade levels and departments' (p. 42). Some scholars have positioned social media sites as online PLNs which facilitate synchronous and asynchronous collaborative engagement, in which people can discuss topics that lead to mutual reflection and understanding (Colwell & Hutchison, 2017;Cook et al., 2017;Garrison, 2007;Sie et al., 2013). Trust et al. (2016), however, encourage researchers to see that PLNs are 'broader, multifaceted systems that often incorporate multiple communities, networks of practice, and sites that support both on-and off-line learning ' (p. 17). PLNs are made up of people, tools, and resources that aid in personalised professional development (Trust et al., 2016) and can exist regardless of temporal and spatial proximity, as ideas and resources can be shared across geographical, temporal, and technological boundaries.
PLNs differ from traditional professional development in that they can be asynchronous, continually responding to the professional learning needs of teachers and school leaders and built from the ground-up (Prestridge, 2020;Trust et al., 2018). For K-12 teachers, PLNs can 'nurture affective, social, cognitive, and identity aspects of their professional growth' (Trust et al., 2016, p. 28). Extant research supports that peer-to-peer collaboration among teachers can enhance student learning (Moolenaar, 2012). Moreover, blending of professional learning between online and face-to-face environments can support enhanced outcomes for teacher learning (Matzat, 2013). This study, then, explores the ways that teachers shared resources from Pinterest and how such sharing relates to their online (i.e., Pinterest) and offline (i.e., school) learning within their PLNs.

Teachers, social media, and professional learning
Teacher collaboration in an online PLN often takes place via social media (Trust et al., 2016). A number of empirical articles have recently shown that teachers' use of social media for professional learning and curricular inspiration is widespread (Duncan-Howell, 2010;Huber & Bates, 2016;Macià & García, 2016;Sawyer & Myers, 2018;Sawyer et al., 2019;Trust et al., 2017). Researchers support this professional use, as this 'type of professional development provides an online space for teachers to discuss methods and resources in a quick and efficient manner with a wide-reaching network of educators' (Colwell & Hutchison, 2017, p. 6). Thus far, researchers have focused largely on how Twitter (Greenhow et al., 2019a(Greenhow et al., , 2019b and Facebook (Kelly & Antonio, 2016;Muls et al., 2019;Shelton & Archambault, 2018) operate as sites of professional learning, yet research on how Pinterest operates as such a space is still nascent. We now share the ways teachers have differently utilised these platforms for the purposes of professional learning.
Twitter is a popular platform with teachers who are seeking online collaboration, community, professional networks (Carpenter & Krutka, 2014, 2015 and 'just in time' professional development (PD) (Greenhalgh & Koehler, 2019). Moreover, Fischer et al. (2019) find that Twitter can facilitate features of high-quality professional learning, such as collective participation and duration (Desimone, 2009) by democratising participation and encouraging teacher agency in their learning processes. Indeed, teachers describe their experiences on Twitter positively, indicating that it was a creative and freeing space instead of a PD experience that was done to them . For emerging teachers, Twitter has been used in a mentoring capacity (Carpenter & Morrison, 2018;Smith Risser, 2013), as online relationships can supplement insufficient field experiences or connect like-minded teachers.
Identifying its myriad benefits for new teachers, some teacher educators have recommended that teacher candidates be introduced to Twitter early in their undergraduate careers to ensure they 'can access their PLNs to find ideas, feedback, and support' without 'waiting passively for the next PD workshop in hopes it might address their needs' (Carpenter & Morrison, 2018, p. 28). Because of the dynamic affordances of the platform, teachers have been able to repurpose Twitter towards their needs and use a variety of literacy practices on the site (Greenhalgh et al., 2018). Yet, despite the overwhelming evidence that Twitter supports the cultivation of online PLNs that can offer high-quality professional learning, we see few researchers interrogating how teachers translate their online PLN learning to their face-to-face networks, even though it is known that PLNs traverse both spaces.
Published empirical inquiries into how teachers use Facebook suggest a similar pattern of engagement. Studies have shown that Facebook is a site of collaboration and professional learning where innovative pedagogy can be fostered by sharing teaching strategies and tips (Goodyear et al., 2004;Lantz-Andersson et al., 2017). Facebook brings together already established groups of teachers working on similar projects and facilitates communication with distant peers (Palmquist & Barnes, 2015) who may not otherwise know one another (Ranieri et al., 2012). Facebook has also been used as an informal learning tool (Cinkara et al. 2017), where new teachers gather resources, collaborate, and develop content and pedagogical content knowledge. Thus, Facebook is considered valuable in pre-service teacher education and across the lifespan of teaching (Manca & Ranieri, 2016). Importantly, there is evidence that Facebook can enhance the likelihood of face-to-face collaboration of previously disconnected teachers (Ranieri et al., 2012).
Unlike research into Twitter and Facebook, empirical research into teachers' use of Pinterest is nascent (Archambault et al., 2019). A number of scholars and practitioners across the educational spectrum have praised Pinterest's affordances as a space for teachers to find evidence-based practices (Cleaver & Wood, 2018), connect, network, and share new ideas (Franks & Krause, 2017), and learn the ins and outs of teaching (Ingram, 2019). Qualitative interview research conducted by Carpenter et al. (2018) support these assertions, as they found that Pinterest serves as a space for networking, collaboration, and the sharing of content.
Researchers have sounded the alarm, however, regarding the quality of what exactly gets shared on Pinterest, finding that pins are often inaccurate, culturally insensitive, and lacking in coherence (Huber & Bates, 2016;Miller, 2015). Considering the role that PLN collaborations can play in enhancing teacher knowledge of content and pedagogy, we see a need to understand how potentially unsound resources are consumed and digested by teachers not only in an online space, but as they navigate the online and offline networks that support their ongoing learning.

Social media typologies
As we consider how online spaces provide opportunities for educators to engage in professional learning in person and online, it is useful to parse how people generally engage with such online spaces. One way of analysing such engagement is through the creation of social media typologies, which are sometimes called personas or profiles. In general, typologies serve to categorise people and identify conceptual and theoretical features of human behaviour (Johnson & Kulpa, 2007). Typologies are used to classify social media users based on their patterns of social media use (Brandtzaeg, 2010(Brandtzaeg, , 2012. Typologies are well used by communications practitioners, especially in the field of marketing, where brands develop internal strategies for defining types of users in order to sell products to them (Rozen et al., 2012). Typologies help us understand the ways different people make use of the online world in order to learn from one another (Lundgren et al., 2019;Aristeidou et al., 2017;Ponciano & Brasileiro, 2014). We seek here to understand how teachers' online interactions affect their offline interactions, acknowledging the benefits typology research may have to those interested in enhancing PD.

Analytical framework
We use Brandtzaeg's (2010, 2012) media use typology (MUT) as a means for understanding the ways that participants in this study interacted with social media. The MUT, an established analytical framework, was used to define, describe, and delineate participants within this study. Specifically, the MUT, which was created from a meta-analysis of typology literature spanning a five-year period, proposes five user categories defined by their general usage of social media (Table 1).
We used the MUT as an analytical framework to parse participants into categories to better understand how their social media use may relate to their ideas of sharing resources from Pinterest with their offline professional colleagues. In other words, we compare participants' MUT when using social media generally to a newly created typology that we call the Peer-to-Peer Pinterest Sharing Typology that illuminates how they share educational resources found in online social media environments through their online PLNs with their offline, face-to-face PLNs.

Survey design and distribution
We designed a qualitative study (Merriam & Tisdell, 2009) involving open-and closed-response survey data. The three-person research team collaboratively designed a 29-question survey; two of the questions from the survey are the focus of this research. In general, survey design was informed by scholarship focused on teachers' use of Pinterest, and specific questions were developed to delve deeper into researchers' suggestions for further research. Following the publication of results from this survey regarding educators' use of Pinterest (Schroeder et al., 2019), we sought to further elaborate on participant responses to survey questions regarding social media use and sharing of Pinterest materials. In the current research, we analysed an open-ended question about sharing Pinterest materials (i.e. 'Do you share your Pinterest boards with peers in your teacher education program? What facilitated that sharing?'). We analyse this question to help determine what resources teachers found and how they shared with colleagues. Additionally, we analysed a close-ended question that asked participants to disclose their personal social media use (i.e. 'Which of the following sentences best describes your personal use of social media?'). We included this question in the study as it allowed us to determine participants' MUT, which directly relates to our research question regarding teachers' online/offline interactions and their social media typology.
Potential participants were able to indicate their interest in participating via responding affirmatively to an informed consent document on the opening page of the survey. Each researcher shared the survey link via select social media and email to personal and professional networks through a method of snowball and convenience Table 1 MUT and descriptions (from Brandtzaeg's (2010(from Brandtzaeg's ( , 2012 The statements that describe social media use were included as part of the survey given to participants. Participants were allowed to select all descriptions that applied to their use sampling (Creswell, 2011). In the current research, we sought to determine teachers' online to offline sharing proclivities and the relationship to social media typologies and report on findings from 88 participants (32 preservice teachers and 56 in-service teachers). We postulate that pre-service teachers are burgeoning members of the teaching community, thus, can be positioned as curriculum makers (Kridel, 2010) in a similar manner to inservice colleagues with additional years of experience. As we were interested in teachers' resource sharing and their online/offline typologies regardless of level of experience, we report the findings in aggregate as opposed to dividing types of teachers.

Participant demographics
Due to snowball and convenience sampling the vast majority of participants indicated that they taught in one state in the southeastern United States (n = 70). In general, participants indicated that they identified as female (n = 86); only two participants indicated they were male. Most participants taught elementary school (n = 59), followed by those who indicated they taught high school (n = 19); few taught middle school (n = 8); two participants indicated something else (i.e. teaching pre-service teachers or teaching across grade bands). Participants came from varied teaching experiences, with the majority indicating having five or fewer years teaching experience (n = 60) to some having between six-and fifteen-year experience (n = 16), and others having 16 or more years of experience (n = 12).

Data analysis
One researcher examined and tallied participant responses to the survey question, 'Which of the following sentences best describes your personal use of social media?' in order to determine teachers' MUT. Then, data analysis followed a method of first and second cycle coding as outlined by Miles et al. (2014) for the survey question 'Do you share your Pinterest boards with peers in your teacher education program? What facilitated that sharing?' . Each researcher accessed participant answers to the survey question then applied first-cycle open codes independently. Following this, codes were compared across researchers to ensure credibility across findings (Tracy, 2010). We then underwent a second round of coding, refining the first-cycle codes and comparing again across researchers (Saldaña, 2013). Then, researchers examined this second round of coding to define typologies based on participants' descriptions of their Pinterest sharing, which we name as the participants' Peer-to-Peer Pinterest Sharing Typology. Each category in the typology represents our final codes which we define and explore in detail in our findings. In a few cases, participant responses were double-coded, as the participant response encapsulated two specific ideas that other participants described. After this, we compared the Pinterest-specific sharing typologies to the MUT to see alignment and misalignment between them.

Results
In this section, we share findings focused on the identification of survey participants' social media typologies and the potential relationships to the Peer-to-Peer Pinterest Sharing Typology. To organise our findings, first, we share participants' social media MUTs as they relate to Brandtzaeg's (2010, 2012) media use typology. Next, we describe participant responses regarding whether and how they shared educational content found on Pinterest with their school-based colleagues. The Pinterest-specific findings first focus on how the participants themselves responded to two open-ended survey questions. Then, we move towards interpreting participant responses to highlight their Peer-to-Peer Pinterest Sharing Typologies that account for how participants share online content and learning into offline environments. Lastly, we compare the ways that educators' Peer-to-Peer Pinterest Sharing Typologies complement and contrast with the MUT.

Participants' social media use typologies
In addition to basic demographic information, we collected data regarding participants' social media typologies (Table 2). These typologies were considered to determine the ways that teachers' social media typologies aligned with or branched from the ways they described sharing Pinterest-specific educational resources with colleagues in their local, face-to-face environment. No teachers indicated that they interacted with social media in ways that No Show/NonUsers or Newcomer/Sporadics would. There were very few Cliquers/Debaters & Entertainment Users (n = 4) as well as few Onlooker/ Lurkers (n = 16). The majority of participants were classified as Sparks/Instrumental Users (n = 29) or Mix & Minglers/Socialisers (n = 28). Eleven participants had a mixed social media typology, meaning their social media use crossed bounds of the original tiered typology.

Peer-to-peer Pinterest sharing typologies
We found that 67% (n = 59) of participants did not share items they curated on Pinterest with peers. Thirty-three per cent of participants claimed they shared resources and ideas curated on Pinterest (n = 29) in order to provide inspiration to peers, gain ideas from colleagues, and as a tool to prepare for lesson planning. Going beyond these raw numbers, we identified five main Peer-to-Peer Pinterest Sharing Typologies with sub-typologies embedded within (Table 3)

The team player
The Team Player actively shared items found on Pinterest with offline teammates and colleagues. We characterised Team Players by their commitment to collaboration-Pinterest boards were not solely for their own private use, nor were they merely open to the public. When elaborating on what facilitated their sharing, Team Players indicated they shared pins with co-teachers, para-professionals, teammates, cohort members, and grade-level teams. Specifically, these individuals discussed how sharing pins with teammates added to the planning process.
Overall, these participants viewed Pinterest as an extension of their collaborative experiences with colleagues, teammates, and peers that enabled them to enhance curriculum and learning through intentional sharing of resources and ideas. As one participant shared: Twenty-four participant responses were coded as 'Team Player. ' Within these responses, 11 communicated that they shared their boards through general statements, such as one participant who wrote, 'sharing is caring. ' These individuals were not specific regarding their mechanisms for sharing, but they explicitly stated they shared pinned Pinterest resources with their offline PLN of coteachers, teammates, colleagues, and friends. Conversely, other responses coded as 'Team Player' provided specific information related to where and how they shared Pinterest resources with colleagues. Due to the variance in these Team Player's sharing styles, we developed two subtypologies in addition to the main Team Player typology (n = 11): The Virtual Team Player (n = 4) and The Faceto-Face Team Player (n = 9).

I do share these boards with other pre-service teachers. Most often during conversations or when my fellow peers are in need of inspiration. I share my Pinterest boards with them or recommend that they use the app to find ideas that work best for their classroom.
The Virtual Team Player. The Virtual Team Player (n = 4) was characterised by their intentional virtual sharing with offline, school-based colleagues. These individuals strategically 'shared boards with all Pinterest members at school, ' sent 'pins to other teachers on Pinterest, ' and shared 'specific pins to teachers through email. ' One response illustrated the Virtual Team Player when stating, 'We send pins to each other all the time! This makes it easier than trying to explain the pin later. ' The Face-to-Face Team Player. When explaining their methods for sharing, the Face-to-Face Team Player (n = 9) described sharing materials found on Pinterest during team meetings, planning sessions, and during lunch. Whether they engaged in common team planning or planning for co-teaching, Pinterest pins became a source of discussion. Some participants directly shared Pinterest boards with teammates 'before we come together to discuss each one, ' and others emailed them to later 'discuss findings over lunch. ' These individuals cultivated items on Pinterest and used pins to facilitate face-to-face conversations. Specifically, one participant noted that her team has a shared Pinterest board that they use as a source of discussion during team planning. Whether sharing pins during conversations to inspire peers or identifying items 'we think each other will like, ' the Face-to-Face Team Player was a collaborative Pinterest user who intentionally connected their online PLN to their offline PLN.

The constrained colleague
The Constrained Colleague (n = 7) was willing to share but unable to because of extenuating circumstances. For some, these circumstances included a hostile school environment and school-based administrative constraints. One participant shared their administrator did not support Pinterest, as they 'consider[ed] it social media. ' Other participants had a sense of selfconstraint, as they thought they did not have enough of either resources or experiences to share. These individuals 'wouldn't mind sharing' and 'probably will do so in the future, ' yet they indicated that they had not shared because they 'have not curated much information. ' Overall, these individuals expressed an interest in sharing; yet, due to a lack of information or collaborative school-based support they communicated a sense of constraint.

The conscripted colleague
The Conscripted Colleague (n = 4) typology consisted of those who were commissioned to share with others through a course assignment or administrative request. These individuals explicitly communicated that they shared items cultivated on Pinterest because they were asked either explicitly through faculty presentations (if an in-service teacher) or implicitly through course assignments (if a pre-service teacher).

The archivist
The Archivist consisted of individuals who created boards and primarily pinned for themselves; however, they acknowledged that due to the openness of the medium, their school-based colleagues could connect with them virtually. Some archivists claimed that they limited their board to friends or followers only, while others acknowledged that anyone could see their boards. We see archivists as those who collected, curated, and sorted, but who shared only with those who made an effort to visit the archive. Two Archivist sub-typologies emerged: 1) Limited to Friends and 2) Open Curator.
Limited to Friends. Whereas Pinterest is primarily used for the creation of personal boards, these Archivists (n = 4) expressed a willingness to share curated pins with followers. They discussed following friends on Pinterest and noted that boards are 'open to my followers. ' Thus, friends that follow this Archivist can access their pins.
Open Curator. The Open Curator (n = 9) viewed Pinterest boards as public domain, indicating that their boards are public. They recognised that other teachers could openly access their pins and explained that their 'education pinboards are public and can be viewed by others. ' Thus, if others wanted to access their Pinterest boards, they could do so publicly or as a follower. Whereas these individuals expressed that they do not share items cultivated on Pinterest, at the same time they recognised that their Pinterest boards are public so 'anybody has access to it. ' Thus, the Open Curators were characterised by viewing sharing as something that could organically occur within the online space of Pinterest, as opposed to their offline PLN.

The personal pinner
The Personal Pinner pinned for their own purposes and did not describe their engagement with Pinterest as collaborative. These individuals did not describe any means for actively sharing their pins nor did they acknowledge that boards may be public to other users. However, within the Personal Pinners two sub-typologies evolved: (1) Strictly Personal Pinner and (2) The Filers.
Strictly Personal Pinner. Strictly Personal Pinners (n = 38) explicitly stated they did not share resources cultivated on Pinterest. These individuals used Pinterest and cultivated boards, but they claimed they did not share.
The Filer. For these individuals (n = 5), Pinterest is a space to categorise ideas, or a 'dumping ground to look back at when in need of some ideas. ' The Filers used Pinterest as a personal curation tool that does not cross over into school-based collaborations. However, several participants stated they 'wouldn't mind' sharing pinned resources if asked in the future.

Describing the relationship between educators' social media and their peer-to-peer pinterest sharing typologies
With participants' MUT and Peer-to-Peer Pinterest Sharing Typologies accounted for, we sought to explore the connections between them (Fig. 1). We first discuss incidents where there was perceived misalignment between the two typologies, then describe occurrences of alignment.
In terms of misalignment, we saw that regardless of social media typology category, the Peer-to-Peer Pinterest Sharing Typology of Personal Pinner was highly represented. A specific incidence of this is the way in which the typology of Personal Pinner was highly represented in the social media typology categories of Sparks/Instrumental & Advanced Users as well as Mix and Mingler.
The majority of participants who had originally been identified as Sparks/Instrumental & Advanced Users were categorised as Personal Pinners in the emergent peer-to-peer Pinterest sharing typology. Sparks/Instrumental & Advanced Users were those who had indicated sophisticated social media use, including being on social media constantly, and using it to pursue multiple avenues, including connecting with others, reading the news, and generally being 'in the loop. ' This is in contrast to the way that Personal Pinners engage with Pinterest, as they tended to use the site for personal filing of ideas rather than to connect and share with others.
The same aspect of misalignment occurred when examining how many Mix and Minglers were categorised as Personal Pinners within the Peer-to-Peer Pinterest Sharing Typology. Within the MUT, Mix and Minglers were those who indicated that they used social media to exchange information with others and post about their day. Yet, when describing their use of Pinterest, these participants were mostly uninterested in sharing Pinterest resources with colleagues.
In terms of the MUT and Peer-to-Peer Pinterest Sharing Typologies alignment, two examples are worth noting: the connection between Onlookers/Lurkers and Personal Pinners and between Mix & Minglers/Socialisers and Team Players. Within the typology of Onlookers/ Lurkers, described as those who check social media but rarely post, was a high representation of the Peer-to-Peer Pinterest Sharing Typology of Personal Pinners. We see these typologies as aligned, as using Pinterest as a means to file ideas or store ideas for themselves is well aligned with the conceptualisation of checking social media and posting with less frequency. This means that in some cases, teachers who were looking for resources on Pinterest were supported by the platform, where they could use Pinterest for their own purposes without needing to interact with others in either their online or offline PLN.
MUT and Peer-to-Peer Pinterest Sharing Typology alignment also occurred within the intersection of Mix & Minglers/Socialisers and Team Players. In the social media typology, Mix & Minglers/Socialisers were those who used social media to exchange information, check in with people, and post about their daily experiences. In the Peer-to-Peer Pinterest Sharing Typology, Team Players were those who actively shared Pinterest items with teammates and colleagues. Thus, for these participants, their way of being within their online PLN related directly to the way that they share with school-based PLN.

Discussion
Our aims in this research have been to explicate how teachers share Pinterest-specific educational resources with their school-based colleagues and to describe the ways that teachers' online and offline sharing proclivities are related to their social media typologies. While the majority of research around teachers and their PLNs has focused solely on the online component of a PLN, this research has sought to understand what happens to networked collaboration as teachers move between the online and offline spaces they inhabit. While research has uncovered that sites like Twitter, Facebook, and Pinterest are popular sites for teachers that have been found to foster innovation and collegiality within the specific platforms, we argue that previous research does not go far enough into interrogating how learning on social media sites that constitute teachers' PLNs translate to schoolbased collaborations.
We made use of Brandtzaeg's (2010Brandtzaeg's ( , 2012 MUT to categorise study participants, which led to the creation of our Peer-to-Peer Pinterest Sharing Typology as the MUT did not capture the nuances of Pinterest-based networked collaboration by teachers. Our subsequent analysis revealed alignments as well as misalignments between the MUT and the Peer-to-Peer Pinterest Sharing Typology. Categorising social media users in this way is prevalent in communications research. Indeed, communications researchers have found that such categorisation can reveal trends in use as well as predict how users might gain social capital (Naseri, 2017). Although communications researchers have embraced the categorisation of social media users, few researchers have examined this concept within educational contexts. Such research is limited to informal learning spaces such as social media sites and is discipline-specific, focusing on the geosciences (Lundgren et al., 2018;Schroeder et al., 2019).
As educational researchers, we must consider the implications of using frameworks that have been designed for non-educative contexts, since these rarely capture the nuance of educational work and use of social media sites. Future researchers could explore how social media use typologies within educational research could augment PD experiences. Currently, such PD experiences do not account for teachers' use of social media platforms for content development and peer support, although it is clear that social media as a means of PD can augment teachers' self-efficacy as well as act as collaborative spaces (Carpenter & Green, 2018;Carpenter et al., 2020a). Applying social media typologies in PD settings and accounting for the connections between online and offline collaboration could allow for such PD activities to better account for what works, for whom, and under what conditions. Our findings show that there are varying methods of sharing between teachers' online and offline PLNs, some of which relate to how teachers describe their use of other social media. Acknowledging that research into how teachers share and engage on single platforms can only illuminate a sliver of their engagement in professional learning, understanding more about how teachers bring knowledge and resources gained from online PLNs to their face-to-face environments provides more insight into the myriad ways teachers collaborate or choose not to collaborate. This matters, as collaboration is perceived as an essential skill for educators-it is often measured through professionalism requirements in teacher education programmes (Creasy, 2015), and often included in externally mandated standards for educators.
For example, the ISTE standards for educators include a standard called 'Collaborator' which emphasises the ability to collaborate with colleagues during dedicated planning time, co-learn with students, and use technology-based collaborative tools. An additional ISTE standard tasks educators with modelling 'the identification, exploration, evaluation, curation and adoption of new digital resources and tools for learning' (ISTE, Standard 2c). Within this study, approximately a quarter of survey responses were classified under the Peer-to-Peer Pinterest Sharing Typologies category of 'Team Player, ' whose responses align with the ISTE standard: they could identify, explore, evaluate, and curate online resources in addition to sharing these resources with colleagues. While literature about professional learning on Pinterest suggests that it is a site of collaboration and networking (Archambault et al., 2019;Franks & Krause, 2017), these affordances do not necessarily translate to face-toface collaboration and learning with school-based peers, meaning that there is a potential loss of collaboration and innovation as teachers shift between online and offline spaces.
With the great majority of teachers in this study emphasising their hesitancy and/or unwillingness to share Pinterest-based resources with their school-based peers, we encourage pre-service and in-service teacher PD efforts to continue to infuse ways to authentically support the sharing of online resources to normalise the practice of sharing, discussing, and evaluating resources. As Nochumson (2019) discussed, supporting teachers' collaboration on ideas found in online spaces may lead to more critically informed decision making regarding the teaching practices carried into offline spaces and ultimately the classroom. Those who caution against using Pinterest may see Pinterest's lack of crossover into school-based or face-to-face PLNs as positive. To some, the less Pinterest is shared, the better. However, we see the lack of collaboration with local colleagues as problematic. Without thoughtful engagement with those in their hyper-local context, we question whether teachers are able to address a documented lack of cultural and racial diversity in the pins (Chang et al., 2014) or even address potential factual inaccuracies. Bringing together the multiple perspectives of members of school-based PLNs could help to minimise the use of problematic materials from Pinterest. Research has also shown that teachers' pins have an impact on student achievement, with more pins focused on memorisation having a negative impact on student learning (Knake et al., 2021). We posit that sharing pins in the school-based setting can potentially support a cross-flow of pinned material that might interrupt pinning patterns that have deleterious impacts on student learning. Thus, on a practical level, teacher educators and those working in teacher PD should consider structures for ensuring boundaries of PLNs are fluid or acknowledged. Carpenter and Morrison (2018) describe how to foster Twitter-specific PD, emphasising how the inclusion of Twitter and Instagram in teacher education courses can bridge the gap of theory and practice for pre-service teachers (Carpenter et al., 2020a(Carpenter et al., , 2020b. We recommend that teacher educators and PD leaders explore how structures for collaboration are designed and developed for other social media platforms as well as between social media platforms and face-to-face professional learning networks. Cultivating habits of collaboration online, offline, and between online and offline spaces should begin in teacher education courses and continue through PD opportunities. Something as simple as connecting face-to-face colleagues on social media platforms like Pinterest could be the push individuals need to collaborate. On the other hand, many teachers did share resources across online and offline spaces. Teacher educators and PD leaders can integrate this type of sharing in face-to-face learning communities and when designing PD experiences as a way to formally support collaboration across online and offline spaces.

Conclusion
Within this study, we investigated the ways that teachers shared resources they found on Pinterest with their school-based colleagues. We also sought to understand how the ways that teachers interact in online/offline worlds aligned with their social media typologies. While Pinterest allowed for some participants to connect, especially those who indicated that they already used social media with the aim of connecting, when transferring learning or a sense of community to face-to-face environments, collaboration is limited. We believe this study has laid groundwork in understanding how Pinterest operates within the broader PLNs teachers take part in. With this interconnected, online/offline conception of PLNs in mind, Trust et al. (2016) recommend researchers 'be mindful about the limitations of focusing on single aspects of PLNs and potentially losing sight of the forest for the trees' (p. 28). In this study, we take their advice by positioning Pinterest as one tool in educators' interconnected PLNs, asking how this one online tool that connects teachers at a global-level transfers to the hyperlocal, school-based PLNs in which teachers participate.