-- Full Papers. -- LLM-based Structuring of Oral Discussion in Workshop to Support Collaboration among Local Government and Simulated Citizens. -- A Metaverse-Based Virtual Office System with Overhearing Function for Facilitating Smooth Joining in Ongoing Conversations. -- Motivational Dynamics and Platform Design in Online Communities of Teachers: A Multi-Case Study. -- Adaptation of a self-determination theory-based questionnaire on collaborative classroom dynamics. -- Exploring Group Behavior and Discussion Productivity in Anonymous Chatrooms for Ethical Decision-Making. -- Extending an Intelligent Tutoring System for Oral Communication with Peer Assessment Capabilities: An Evaluation Study. -- Dialogue Act Analysis of Facilitator-Children Multilingual Communication. -- Detecting Sports Spoiler Images on YouTube. -- An Exploratory Study on Empathy and Online Discussions in Computer Supported Collaborative Learning. -- Interpreting Arrows in Mobile Robot-Human Encounters: The Influence of Spatial Context and Presentation Timing. -- Quantitative Observation to Explore Turn-changing Mechanism of the Conversation in Remote Meetings Accompanying Supplemental Materials. -- Engagement Analysis of Speech Text from Activity Reports of a Distance Problem-Based Learning. -- Work in Progress Papers. -- Exploring Interest Similarity Features and Their Combinations for Friendship Recommendation Without Cold Start. -- Stimulating Creative Hypothesis Discovery by Future Human-AI Teaming. -- Using Word Games as Facilitator to Awareness Raising Communication in Public Spaces. -- Enabling Mixed Genetic Algorithm for Automatic Group Formation System. -- Make-up FLOW: A Study of Beauty YouTubers' Video Recommendation Methods Based on Make-up Flowcharts. -- Active Participation vs. Directed Observation in Collaborative 3D Virtual Museums. -- Generative AI chatbot in Blinded: Students’ Behaviors and Design Principles. -- Generative AI collaboration in the orchestration of supervised classroom problem solving. -- Development and Evaluation of Gamification-based Addressing Promotion System for Teaching Assistants. -- Boosting Non-Native Speaker Engagement: Simplifying Text with Large Language Models.

This book constitutes the proceedings of the 30th International Conference on Collaboration Technologies and Social Computing, CollabTech 2024, held in Barcelona, Spain, during September 11–14, 2024. The 12 full papers and 10 short papers included in this book were carefully reviewed and selected from 85 submissions. The papers present up to date research on theory, models, design principles, methodologies, and case studies that contribute to a better understanding of the complex interrelations between collaboration and technology.