{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,23]],"date-time":"2025-12-23T06:31:27Z","timestamp":1766471487317,"version":"build-2065373602"},"reference-count":115,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2022,5,10]],"date-time":"2022-05-10T00:00:00Z","timestamp":1652140800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001655","name":"German Academic Exchange Service","doi-asserted-by":"publisher","award":["2020-1-DE01-KA226-HE-005738"],"award-info":[{"award-number":["2020-1-DE01-KA226-HE-005738"]}],"id":[{"id":"10.13039\/501100001655","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Mathematics"],"abstract":"<jats:p>The COVID-19-induced distance education was perceived as highly challenging by teachers and students. A cross-national comparison of five European countries identified several challenges occurred during the distance learning period. On this basis, the article aims to develop a theoretical framework and design requirements for distance and online learning tools. As one example for online learning in mathematics education, the ASYMPTOTE system is introduced. It will be freely available by May 2022. ASYMPTOTE is aimed at the adaptive and synchronous delivery of online education by taking a mobile learning approach. Its core is the so-called digital classroom, which not only allows students to interact with each other or with the teacher but also enables teachers to monitor their students\u2019 work progress in real time. With respect to the theoretical framework, this article analyses to what extent the ASYMPTOTE system meets the requirements of online learning. Overall, the digital classroom can be seen as a promising tool for teachers to carry out appropriate formative assessment and\u2014partly\u2014to maintain personal and content-related interaction at a distance. Moreover, we highlight the availability of this tool. Due to its mobile learning approach, almost all students will be able to participate in lessons conducted with ASYMPTOTE.<\/jats:p>","DOI":"10.3390\/math10101628","type":"journal-article","created":{"date-parts":[[2022,5,10]],"date-time":"2022-05-10T21:52:11Z","timestamp":1652219531000},"page":"1628","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Adaptive, Synchronous, and Mobile Online Education: Developing the ASYMPTOTE Learning Environment"],"prefix":"10.3390","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7502-3667","authenticated-orcid":false,"given":"Simon","family":"Barlovits","sequence":"first","affiliation":[{"name":"Department of Mathematics and Computer Science Education, Goethe University Frankfurt, 60325 Frankfurt, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7443-7553","authenticated-orcid":false,"given":"Am\u00e9lia","family":"Caldeira","sequence":"additional","affiliation":[{"name":"School of Engineering, Laboratory for Mathematical Engineering, Research Centre for Systems and Technologies, Polytechnic of Porto, 4249-015 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1721-6655","authenticated-orcid":false,"given":"Georgios","family":"Fesakis","sequence":"additional","affiliation":[{"name":"Learning Technology Educational Engineering Laboratory, University of the Aegean, 85131 Rhodes, Greece"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1691-4435","authenticated-orcid":false,"given":"Simone","family":"Jablonski","sequence":"additional","affiliation":[{"name":"Department of Mathematics and Computer Science Education, Goethe University Frankfurt, 60325 Frankfurt, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3813-0444","authenticated-orcid":false,"given":"Despoina","family":"Koutsomanoli Filippaki","sequence":"additional","affiliation":[{"name":"Learning Technology Educational Engineering Laboratory, University of the Aegean, 85131 Rhodes, Greece"}]},{"given":"Claudia","family":"L\u00e1zaro","sequence":"additional","affiliation":[{"name":"Federaci\u00f3n Espa\u00f1ola de Sociedades de Profesores de Matem\u00e1ticas, 46901 Torrent, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1296-8898","authenticated-orcid":false,"given":"Matthias","family":"Ludwig","sequence":"additional","affiliation":[{"name":"Department of Mathematics and Computer Science Education, Goethe University Frankfurt, 60325 Frankfurt, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0578-4444","authenticated-orcid":false,"given":"Maria Flavia","family":"Mammana","sequence":"additional","affiliation":[{"name":"Department of Mathematics and Computer Science, University of Catania, 95123 Catania, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3292-0624","authenticated-orcid":false,"given":"Ana","family":"Moura","sequence":"additional","affiliation":[{"name":"School of Engineering, Laboratory for Mathematical Engineering, Centre of Mathematics of the University of Porto, Polytechnic of Porto, 4249-015 Porto, Portugal"}]},{"given":"Deng-Xin Ken","family":"Oehler","sequence":"additional","affiliation":[{"name":"Department of Mathematics and Computer Science Education, Goethe University Frankfurt, 60325 Frankfurt, Germany"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1011-295X","authenticated-orcid":false,"given":"Tom\u00e1s","family":"Recio","sequence":"additional","affiliation":[{"name":"Departamento de Ingenier\u00eda Industrial, Escuela Polit\u00e9cnica Superior, University Antonio de Nebrija, 28015 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6093-6618","authenticated-orcid":false,"given":"Eugenia","family":"Taranto","sequence":"additional","affiliation":[{"name":"Department of Mathematics and Computer Science, University of Catania, 95123 Catania, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9553-8975","authenticated-orcid":false,"given":"Stamatia","family":"Volika","sequence":"additional","affiliation":[{"name":"Learning Technology Educational Engineering Laboratory, University of the Aegean, 85131 Rhodes, Greece"}]}],"member":"1968","published-online":{"date-parts":[[2022,5,10]]},"reference":[{"key":"ref_1","first-page":"1","article-title":"The difference between emergency remote teaching and online learning","volume":"27","author":"Hodges","year":"2020","journal-title":"Educ. 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