Virtual meetings are critical for remote work because of the need for synchronous collaboration in the absence of in-person interactions. In-meeting multitasking is closely linked to people's productivity and wellbeing. However, we currently have limited understanding of multitasking in remote meetings and its potential impact. In this paper, we present what we believe is the most comprehensive study of remote meeting multitasking behavior through an analysis of a large-scale telemetry dataset collected from February to May 2020 of U.S. Microsoft employees and a 715-person diary study. Our results demonstrate that intrinsic meeting characteristics such as size, length, time, and type, signifcantly correlate with the extent to which people multitask, and multitasking can lead to both positive and negative outcomes. Our fndings suggest important best-practice guidelines for remote meetings (e.g., avoid important meetings in the morning) and design implications for productivity tools (e.g., support positive remote multitasking). CCS CONCEPTS• Human-centered computing → Empirical studies in collaborative and social computing.

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The COVID-19 global pandemic and resulted lockdown policies have forced education in nearly every country to switch from a traditional colocated paradigm to a pure online "distance learning from home" paradigm. Lying in the center of this learning paradigm shift is the emergence and wide adoption of distance communication tools and live streaming platforms in education. Here, we present the first-ever study on live streaming based education (LS learning) experience during the COVID-19 pandemic through mixed methods. We focus our analysis on Chinese higher education, carried out semi-structured interviews on 30 students, and 7 instructors from diverse colleges and disciplines, meanwhile launched a large-scale survey covering 6291 students and 1160 instructors in one leading Chinese university. Our work not only reveals important design guidelines and insights to better support current remote learning experience during the pandemic, but also provides valuable implications towards constructing future collaborative education supporting systems and experience post pandemic.CCS Concepts: • Human-centered computing → Empirical studies in HCI; Empirical studies in collaborative and social computing; • Applied computing → Distance learning; E-learning.