Lived Experiences of Out-of-Field Public School Science Teachers: A Qualitative Research
Jessa Joy Ambroce | Susie Daza
Discipline: Education
Abstract:
Teaching out-of-field subjects presents a unique blend of challenges and opportunities for science teachers, significantly shaping their professional experiences and practices. Each teacher’s journey is marked by an interplay of joys, struggles, and adaptive strategies. This study explored the lived experiences of science teachers teaching out-of-field subjects, focusing on their joys, satisfaction, fulfillment, challenges, adaptive strategies, and aspirations. Conducted among science teachers in public secondary schools in the Division of Sultan Kudarat, the research utilized a transcendental phenomenological design to capture the essence of their experiences. Data were systematically collected through validated interview guides, consent forms, and transcription protocols. Thematic analysis revealed 17 relevant themes. Five core themes encapsulated the teachers’ experiences: The Trials of Teaching Beyond Your Field, Preparation is the Heart of Adaptation, The Power of Supportive Communities, Growth Beyond Boundaries, and Bridging Theory and Practice. Teachers’ joys and fulfillment were reflected in themes such as The Joy of Student Success, Turning Challenges into Triumphs, and Growth Through Connection. Challenges were highlighted through themes like Mastering the Material and Lesson Prep Struggles, Resource Hurdles and Instructional Innovation, Classroom Harmony and Student Interaction, and Teaching Evolution and Skill Enhancement. Adaptive strategies revolved around Dynamic Teaching Practices and Collaborative Growth, while future aspirations emphasized Building Future Careers, Embracing Teaching Challenges, and Commitment to Lifelong Learning and Teamwork. This study provides a comprehensive understanding of science teachers’ experiences in teaching out-of-field subjects, unveiling their trials and triumphs. The findings informed the creation of a professional development program designed to equip teachers with strategies, tools, and support to enhance their resilience and effectiveness in out-of-field teaching.
References:
- Abulon, E. L. R. (2014). Basic education teachers’ conceptions of their pedagogical knowledge and skills in teaching. Philippine Normal University Research Journal, 2(1), 67-89. DOI: [10.13140/RG.2.2.17271.68002](https://doi.org/10.13140/RG.2.2.17271.68002)
- Acri, M., Hooley, C., Richardson, N., & Moaba, L. (2016). Peer models in mental health for caregivers and families. Community Mental Health Journal, 53(2), 241–249. https://doi.org/10.1007/s10597-016-0040-4
- Acharya, K. (2023). Exploring experiences of science education teachers on professional development. Orchid Academia Siraha, 2(1), 33-41. https://doi.org/10.3126/oas.v2i1.65600
- Akcil, U., Uzunboylu, H., & Kınık, E. (2021). Integration of technology to learning-teaching processes and Google Workspace tools: A literature review. Sustainability, 13(9), 5018. https://doi.org/10.3390/su13095018
- Aldahmash, A., Alshamrani, S., Alshaya, F., & Alsarrani, N. (2019). Research trends in in-service science teacher professional development from 2012 to 2016. International Journal of Instruction, 12(2), 163-178. https://doi.org/10.29333/iji.2019.12211a
- Alshammari, A. (2023). Integrating technological knowledge into higher education curricula: An essential measure for attaining sustainable development in Saudi Arabia. Sustainability, 15(22), 15956. https://doi.org/10.3390/su152215956
- Amaliyah, R. (2024). Analysis of the effectiveness of employee training and development in Islamic boarding schools in improving the quality of education. Jurnal Impresi Indonesia, 3(6), 438–445. https://doi.org/10.58344/jii.v3i6.4954
- Anselmo, C. (2024). Algopsychalia of out-of-field teachers: A qualitative inquiry. American Journal of Education and Technology, 3(3), 1–8. https://doi.org/10.54536/ajet.v3i3.2285
- Baker‐Doyle, K. (2012). First-year teachers' support networks: Intentional professional networks and diverse professional allies. The New Educator, 8(1), 65–85. https://doi.org/10.1080/1547688x.2012.641870
- Bell, M. (2015). “But I wasn’t told to”: Lack of education and workplace policy as barriers in the provision of family planning information. Social Work in Public Health, 30(3), 282–293. https://doi.org/10.1080/19371918.2014.1000505
- Bellocchi, A., & Ritchie, S. M. (2015). “I was proud of myself that I didn’t give up and I did it”: Experiences of pride and triumph in learning science. Science Education, 99(4), 638–668. https://doi.org/10.1002/sce.21159
- Buenacosa, M., & Petalla, M. (2022). Embracing the unknown: Adaptability and resiliency of out-of-field secondary teachers teaching English in public schools. Asian Journal of Education and Social Studies, 1–29. https://doi.org/10.9734/ajess/2022/v37i2796
- Burns, A., & Westmacott, A. (2018). Teacher to researcher: Reflections on a new action research program for university EFL teachers. Profile Issues in Teachers’ Professional Development, 20(1), 15–23. https://doi.org/10.15446/profile.v20n1.66236
- Calinog, J. S., & Manalang, P. E. (2016). The impact of teacher’s subject matter knowledge on student achievement: A local study in the Philippines. Journal of Education and Practice, 7(21), 94-101. DOI: [10.13140/RG.2.2.34741.27365](https://doi.org/10.13140/RG.2.2.34741.27365)
- Calinog, N. R., & Manalang, E. B. (2016). The effect of teacher competence on students' academic achievement in science in selected public high schools in the Philippines. Journal of Research in Science Teaching, 53(8), 1265-1284. https://doi.org/10.1002/tea.21356
- Cavaletto, G. (2024). Cooperative and competitive learning as transformative factors of educational processes for extracurricular skill enhancement. Frontiers in Education, 9. https://doi.org/10.3389/feduc.2024.1388937
- Chen, J., Zhou, J., Sun, L., Wu, Q., Lu, H., & Tian, J. (2015). A new approach for laboratory exercise of pathophysiology in China based on student-centered learning. AJP Advances in Physiology Education, 39(2), 116–119. https://doi.org/10.1152/advan.00143.2014
- Collie, R., Shapka, J., & Perry, N. (2012). School climate and social-emotional learning: Predicting teacher stress, job satisfaction, and teaching efficacy. Journal of Educational Psychology, 104(4), 1189–1204. https://doi.org/10.1037/a0029356
- Coterón, J., Álvarez, E., Ocete, C., & Pérez-Tejero, J. (2020). Teachers’ psychological needs satisfaction and thwarting: Can they explain students’ behavioral engagement in physical education? A multi-level analysis. International Journal of Environmental Research and Public Health, 17(22), 8573. https://doi.org/10.3390/ijerph17228573
- Cordon, A., & Polong, A. (2020). Teacher Qualifications and Student Performance in Science Education: A Study in the Philippines. Journal of Science Teacher Education, 31(4), 123–140.
- Debois, N., Ledon, A., & Wylleman, P. (2015). A lifespan perspective on the dual career of elite male athletes. Psychology of Sport and Exercise, 21, 15–26. https://doi.org/10.1016/j.psychsport.2014.07.011
- Du Plessis, A. E., Gillies, R. M., & Carroll, A. (2014). Out-of-field teaching and professional development: A transnational investigation. International Journal of Educational Research, 66, 13-22. https://doi.org/10.1016/j.ijer.2014.02.002
- Du, X., Chaaban, Y., Sabah, S., Al-Thani, A., & Wang, L. (2020). Active learning engagement in teacher preparation programmes—A comparative study from Qatar, Lebanon, and China. Asia Pacific Journal of Education, 40(3), 283–298. https://doi.org/10.1080/02188791.2020.1717436
- Eisen, S., Schultz, M., Mueller, L., Degenhart, C., Clark, J., Resnick, S., … & Sadow, D. (2012). Outcome of a randomized study of a mental health peer education and support group in the VA. Psychiatric Services, 63(12), 1243–1246. https://doi.org/10.1176/appi.ps.201100348
- Erarslan, A. (2023). Cognitive flexibility and grit during times of crisis for Turkish EFL teachers. Psychology in the Schools, 60(7), 2296–2319. https://doi.org/10.1002/pits.22852
- Fortuna, K., Hill, J., Chalker, S., & Ferron, J. (2022). Certified peer support specialists training in technology and delivery of digital peer support services: Cross-sectional study. JMIR Formative Research, 6(12), e40065. https://doi.org/10.2196/40065
- Gaffney, T. (2022). Examining the impact of a student-centered learning and assessment strategy on engagement among nursing students. Journal of Quality in Health Care & Economics, 5(4), 1–4. https://doi.org/10.23880/jqhe-16000293
- Garba, S., Singh, T., & Yusuf, N. (2013). Integrating technology in teacher education curriculum and pedagogical practices: The effects of web-based technology resources on pre-service teachers’ achievement in teacher education training. Proceedings of ICISTA. https://doi.org/10.2991/icista.2013.14
- Glaés-Coutts, L. (2020). University-supported networks as professional development for teachers in school-age educare. International Journal for Research on Extended Education, 8(1), 66–79. https://doi.org/10.3224/ijree.v8i1.06
- Goos, M., O’Donoghue, J., Ríordáin, M., Faulkner, F., Hall, T., & O’Meara, N. (2020). Designing a national blended learning program for “out-of-field” mathematics teacher professional development. ZDM, 52(5), 893–905. https://doi.org/10.1007/s11858-020-01136-y
- Goos, M., Ríordáin, M., Faulkner, F., & Lane, C. (2021). Impact of a national professional development programme for out-of-field teachers of mathematics in Ireland. Irish Educational Studies, 42(3), 401–421. https://doi.org/10.1080/03323315.2021.1964569
- Hashemi, A. (2021). Online teaching experiences in higher education institutions of Afghanistan during the COVID-19 outbreak: Challenges and opportunities. Cogent Arts and Humanities, 8(1). https://doi.org/10.1080/23311983.2021.1947008
- Hilton, A., Hilton, G., Dole, S., & Goos, M. (2015). School leaders as participants in teachers’ professional development: The impact on teachers’ and school leaders’ professional growth. Australian Journal of Teacher Education, 40(12). https://doi.org/10.14221/ajte.2015v40n12.8
- Hobbs, L. (2012). Exploring the effectiveness of professional development for out-of-field teachers. Teacher Development, 16(3), 337-353. https://doi.org/10.1080/13664530.2012.722286
- Hobbs, L. (2013). Out-of-field teaching in Australian secondary schools: A structural perspective. Australian Journal of Education, 57(1), 70-85. https://doi.org/10.1177/000494411305700106
- Hoque, F., Yasin, R., & Sopian, K. (2022). Revisiting education for sustainable development: Methods to inspire secondary school students toward renewable energy. Sustainability, 14(14), 8296. https://doi.org/10.3390/su14148296
- Houghton, N., Houstoun, W., Yates, S., Badley, B., & Kneebone, R. (2021). Cross-disciplinary perspectives on the transition to remote education. BMJ Simulation and Technology Enhanced Learning, 7(6), 586–589. https://doi.org/10.1136/bmjstel-2020-000814
- Hung, C., Sun, J., & Yu, P. (2015). The benefits of a challenge: Student motivation and flow experience in tablet-PC-game-based learning. Interactive Learning Environments, 23(2), 172–190. https://doi.org/10.1080/10494820.2014.997248
- Ilgan, A. (2013). Ögretmenler için etkili mesleki gelisim faaliyetleri. Usak University Journal of Social Sciences, 14(3). https://doi.org/10.12780/uusbd174
- Ingersoll, R. M. (2002). The out-of-field teaching problem. Educational Researcher. 10.3102/0013189X031001026](https://doi.org/10.3102/0013189X031001026)
- Ingersoll, R. M. (2003). The problem of underqualified teachers in American secondary schools. Educational Researcher, 28(2), 26-37. https://doi.org/10.3102/0013189X022002026
- Ingram, J. (2013). A mixed methods evaluation of peer support in Bristol, UK: Mothers’, midwives’, and peer supporters’ views and the effects on breastfeeding. BMC Pregnancy and Childbirth, 13(1). https://doi.org/10.1186/1471-2393-13-192
- Javed, K., Akhtar, A., Nasir, U., Farooq, N., Sikandar, S., & Rizwan, M. (2022). Need of the hour: Student-centered learning in undergraduate medical curriculum. PJMHS, 16(12), 74–76. https://doi.org/10.53350/pjmhs2022161274
- Jiang, X., Shi, D., Fang, L., & Ferraz, R. (2022). Teacher–student relationships and adolescents’ school satisfaction: Behavioral engagement as a mechanism of change. British Journal of Educational Psychology, 92(4), 1444–1457. https://doi.org/10.1111/bjep.12509
- Johnson, K., & Golombek, P. (2011). The transformative power of narrative in second language teacher education. TESOL Quarterly, 45(3), 486–509. https://doi.org/10.5054/tq.2011.256797
- Jumraeni, J. (2023). Academic resilience: The roles of parent support and peer support. Jurnal Psikologi Pendidikan dan Konseling, 22. https://doi.org/10.26858/jppk.v0i0.38854
- Kandimba, H., Mandyata, J., & Simalalo, M. (2023). Teachers’ understanding of curriculum adaptation for learners with moderate intellectual disability in Zambia. European Journal of Special Education Research, 9(1). https://doi.org/10.46827/ejse.v9i1.4653
- Kaplan, T. (2023). Integrating virtual teaching in a new era of medical education: Lessons from a neurology course. Advances in Medical Education and Practice, 14, 1147–1156. https://doi.org/10.2147/amep.s413816
- Kenny, J., Hobbs, L., & Whannell, R. (2019). Designing professional development for teachers teaching out-of-field. Professional Development in Education, 46(3), 500–515. https://doi.org/10.1080/19415257.2019.1613257
- Khemakhem, H., Fontaine, R., & Bégin, C. (2021). Teaching corporate governance in an MBA class: An academic note. Accounting Perspectives, 20(2), 171–200. https://doi.org/10.1111/1911-3838.12248
- Lagria, G. (2021). Pragmatic sentiments and coping strategies of out-of-field English teachers in public senior high schools. International Journal of Qualitative Research, 1(2), 112–119. https://doi.org/10.47540/ijqr.v1i2.355
- Lane, C., & Ríordáin, M. (2019). Out-of-field mathematics teachers’ beliefs and practices: An examination of change and tensions using zone theory. International Journal of Science and Mathematics Education, 18(2), 337–355. https://doi.org/10.1007/s10763-019-09964-5
- Lent, R., & Brown, S. (2016). Social cognitive career theory in a diverse world. Journal of Career Assessment, 25(1), 3–5. https://doi.org/10.1177/1069072716657811
- Lin, W., Yin, H., & Liu, Z. (2022). The roles of transformational leadership and growth mindset in teacher professional development: The mediation of teacher self-efficacy. Sustainability, 14(11), 6489. https://doi.org/10.3390/su14116489
- Madulara, M. (2022). Out-of-field teaching: The stories of novice educators in teaching social studies. International Journal of Research Publications, 112(1). https://doi.org/10.47119/ijrp10011211120224116
- Melville, W., Bartley, A., & Fazio, X. (2012). Encouraging uncertainty in the “scientific method”: Promoting understanding in the processes of science with preservice teachers. Canadian Journal of Science Mathematics and Technology Education, 12(2), 214–228. https://doi.org/10.1080/14926156.2012.679995
- Miao, F. (2023). Application of diversified teaching strategies in the intelligent physical education platform: Enhancing course interactivity and engagement. International Journal of Education and Humanities, 10(1), 229–233. https://doi.org/10.54097/ijeh.v10i1.11141
- Mohammed, S. (2022). Teachers’ beliefs: Positive or negative indicators of inquiry-based science teaching? World Journal of Education, 12(1), 17. https://doi.org/10.5430/wje.v12n1p17
- Monteiro, R., Monteiro, D., Torregrossa, M., & Travassos, B. (2022). Modeling athletic career of football players: Implications for career management and retirement. International Journal of Sports Science & Coaching, 18(5), 1478–1486. https://doi.org/10.1177/17479541221111616
- Mortel, T., Bird, J., Chown, P., Trigger, R., & Ahern, C. (2016). General practitioners as educators in adolescent health: A training evaluation. BMC Family Practice, 17(1). https://doi.org/10.1186/s12875-016-0432-0
- Morrison, G., & Ross, S. (1998). Evaluating technology‐based processes and products. New Directions for Teaching and Learning, 1998(74), 69–77. https://doi.org/10.1002/tl.7407
- Murtafiah, W., Lukitasati, M., Lestari, N., Zayyadi, M., & Widodo, S. (2022). Decision-making students winning microteaching contests in design lesson plans and their implementation in mathematics learning. Cypriot Journal of Educational Sciences, 17(6), 2045–2060. https://doi.org/10.18844/cjes.v17i6.7497
- Nazari, F., Ghanizadeh, A., & Mirzaee, S. (2022). EFL teachers' coping strategies amidst the COVID-19 virtual education and their association with work engagement and teacher apprehension. Educational Research for Policy and Practice, 22(1), 1–22. https://doi.org/10.1007/s10671-022-09317-0
- Nguyen, T. (2024). Exploring the role of artificial intelligence-powered facilitator in enhancing digital competencies of primary school teachers. European Journal of Educational Research, 13(1), 219–231. https://doi.org/10.12973/eu-jer.13.1.219
- Niess, M. (2001). A model for integrating technology in preservice science and mathematics content-specific teacher preparation. School Science and Mathematics, 101(2), 102–109. https://doi.org/10.1111/j.1949-8594.2001.tb18011.x
- O’Donoghue, C. (2023). Community caring for a family member with brain injury: Women’s lived experiences. Qualitative Health Research, 34(4), 350–361. https://doi.org/10.1177/10497323231210493
- Oladele, J., Koledafe, O., & Daramola, D. (2021). Prospects for online instructional delivery using Google Classrooms: Implications for higher education in sub-Sahara Africa. Journal of Digital Learning and Education, 1(3), 1–17. https://doi.org/10.52562/jdle.v1i3.227
- Pacana, N., Ramos, C., Catarata, M., & Inocian, R. (2019). Out-of-field social studies teaching through sustainable culture-based pedagogy: A Filipino perspective. International Journal of Education and Practice, 7(3), 230–241. https://doi.org/10.18488/journal.61.2019.73.230.241
- Pak, K., Polikoff, M., Desimone, L., & García, E. (2020). The adaptive challenges of curriculum implementation: Insights for educational leaders driving standards-based reform. AERA Open, 6(2). https://doi.org/10.1177/2332858420932828
- Parker, J., Shum, K., Suldo, S., Shaunessy-Dedrick, E., Ferron, J., & Dedrick, R. (2019). Predictors of adaptive help-seeking across ninth‐grade students enrolled in advanced placement and international baccalaureate courses. Psychology in the Schools, 56(5), 652–669. https://doi.org/10.1002/pits.22223
- Pedida, S. (2023). Plights of tenured teachers in integrating technology in classroom instruction: A phenomenological inquiry. American Journal of Multidisciplinary Research and Innovation, 2(6), 1–20. https://doi.org/10.54536/ajmri.v2i6.1793
- Phyak, P., & Baral, R. (2019). Teacher identity in higher education: A phenomenological inquiry. The Batuk, 5(2), 74–86. https://doi.org/10.3126/batuk.v5i2.30119
- Plessis, D. (2016). Leading teachers through the storm: Looking beyond the numbers and turning the implications of out-of-field teaching practices into positive challenges. International Journal of Educational Research, 79, 42–51. https://doi.org/10.1016/j.ijer.2016.06.010
- Qi, C. (2019). Current situation and prospect of the research on Chinese English teachers' professional identity. Proceedings of CESSES 2019. https://doi.org/10.2991/cesses-19.2019.94
- Rahayu, E., & Osman, S. (2019). Riding out the storm: Out-of-field teaching practice in Indonesia. Humaniora, 10(2), 161. https://doi.org/10.21512/humaniora.v10i2.5628
- Rasna, I., Binawati, N., Tantra, D., & Putra, I. (2021). The harmony of instructional communication in the classroom. Proceedings of ASSEHR. https://doi.org/10.2991/assehr.k.210715.053
- Recede, R., Asignado, R., & Castro, M. (2023). Out-of-field teaching: Impact on teachers’ self-efficacy and motivation. International Journal of Multidisciplinary Applied Business and Education Research, 4(2), 519–533. https://doi.org/10.11594/ijmaber..04.02.19
- Romero-García, C., García, O., & Paz-Lugo, P. (2020). Improving future teachers’ digital competence using active methodologies. Sustainability, 12(18), 7798. https://doi.org/10.3390/su12187798
- Rustan, E. (2023). The English teachers’ strategies for embracing students’ diversities at Indonesian schools in Malaysia. Linguistics Initiative, 3(1), 92–103. https://doi.org/10.53696/27753719.3110
- Sepulveda-Escobar, P., & Morrison, A. (2020). Online teaching placement during the COVID-19 pandemic in Chile: Challenges and opportunities. European Journal of Teacher Education, 43(4), 587–607. https://doi.org/10.1080/02619768.2020.1820981
- Sharplin, E. (2014). Reconceptualising out-of-field teaching: Experiences of rural teachers in Western Australia. Educational Research, 56(1), 97–110. https://doi.org/10.1080/00131881.2013.874160
- Silva, W., Steinmacher, I., & Conte, T. (2019). Students’ and instructors’ perceptions of five different active learning strategies used to teach software modeling. IEEE Access, 7, 184063–184077. https://doi.org/10.1109/access.2019.2929507
- Soydan, S. (2023). The relationship between emotional regulation skills and adaptability to the classes of children. Infants & Young Children, 36(2), 110–129. https://doi.org/10.1097/iyc.0000000000000239
- Songsiengchai, S., Kewara, P., & Prabjandee, D. (2019). Preparation program for enhancing communicative language teaching ability. International Journal of Education Psychology and Counseling, 318–332. https://doi.org/10.35631/ijepc.4310028
- Stefaniak, J., & Tracey, M. (2015). An exploration of student experiences with learner-centered instructional strategies. Contemporary Educational Technology, 6(2). https://doi.org/10.30935/cedtech/6142
- Stewart, F., & Way, L. (2023). Beyond boundaries? Disability, DIY, and punk pedagogies. Research in Education, 115(1), 11–28. https://doi.org/10.1177/00345237231160301
- Teixeira, C., Gomes, D., & Borges, J. (2017). Conceptions of accounting and expectations of learning accounting. Review of Business and Legal Sciences, (27), 103. https://doi.org/10.26537/rebules.v0i27.748
- Thomas, L., Tuytens, M., Devos, G., Kelchtermans, G., & Vanderlinde, R. (2019). Beginning teachers’ professional support: A mixed methods social network study. Teaching and Teacher Education, 83, 134–147. https://doi.org/10.1016/j.tate.2019.04.008
- Thomas, L., Tuytens, M., Moolenaar, N., Devos, G., Kelchtermans, G., & Vanderlinde, R. (2019). Teachers’ first year in the profession: The power of high-quality support. Teachers and Teaching, 25(2), 160–188. https://doi.org/10.1080/13540602.2018.1562440
- Toma, R. B., Matheson, I. A., & Kim, J. (2023). Supporting out-of-field science teachers: An analysis of professional development needs and strategies. Journal of Science Teacher Education, 34(1), 1-19. https://doi.org/10.1080/1046560X.2022.2129998
- Uysal, Ş., & Sarier, Y. (2019). Teacher leadership effects on student achievement and student satisfaction: A meta-analysis on the studies published in Turkey and the USA. Croatian Journal of Education - Hrvatski Časopis Za Odgoj I Obrazovanje, 21(3). https://doi.org/10.15516/cje.v21i3.3257
- Wardoyo, C., Herdiani, A., & Sulikah, S. (2017). Teacher professionalism: Analysis of professionalism phases. International Education Studies, 10(4), 90. https://doi.org/10.5539/ies.v10n4p90
- Weidlich, J., & Kalz, M. (2021). Exploring predictors of instructional resilience during emergency remote teaching in higher education. International Journal of Educational Technology in Higher Education, 18(1). https://doi.org/10.1186/s41239-021-00278-7
- Wright, A. (2023). An instructional innovation that embeds group learning in case teaching: The table case method. Organizational Behavior Teaching Review, 48(3), 526–563. https://doi.org/10.1177/10525629231216642
- Zakarneh, B. (2022). Tuning learning and teaching strategies to individual differences among learners of English in Arab universities. International Journal of English Language and Literature Studies, 11(1), 31–41. https://doi.org/10.18488/5019.v11i1.4419
- Zee, M., & Koomen, H. (2016). Teacher self-efficacy and its effects on classroom processes, student academic adjustment, and teacher well-being. Review of Educational Research, 86(4), 981–1015. https://doi.org/10.3102/0034654315626801
- Zeng, G., Chen, X., Cheung, H., & Peng, K. (2019). Teachers' growth mindset and work engagement in the Chinese educational context: Well-being and perseverance of effort as mediators. Frontiers in Psychology, 10. https://doi.org/10.3389/fpsyg.2019.00839