Cross-language collaborative storytelling plays a vital role in children's language learning and cultural development, fostering both expressive ability and intercultural awareness. Yet, in practice, children's participation is often shallow, and facilitating such sessions places heavy cognitive and organizational burdens on coordinators, who must coordinate language support, maintain children's engagement, and navigate cultural differences. To address these challenges, we conducted a formative study with coordinators to identify their needs and pain points, which guided the design of SparkTales, an intelligent support system for cross-language collaborative storytelling. SparkTales leverages both individual and common characteristics of participating children to provide coordinators with story frameworks, diverse questions, and comprehension-oriented materials, aiming to reduce coordinators' workload while enhancing children's interactive engagement. Evaluation results show that SparkTales not only significantly increases coordinators' efficiency and quality of guidance but also improves children's participation, providing valuable insights for the design of future intelligent systems supporting cross-language collaboration.

翻译：跨语言协作式故事创作在儿童语言学习和文化发展中扮演着至关重要的角色，既能培养表达能力，也能增进跨文化意识。然而在实践中，儿童的参与往往流于表面，而组织此类活动也给协调者带来了沉重的认知与组织负担——他们需要协调语言支持、维持儿童参与度并应对文化差异。为应对这些挑战，我们与协调者开展了一项形成性研究，以识别其需求与痛点，并据此设计了SparkTales——一个用于跨语言协作式故事创作的智能支持系统。SparkTales利用参与儿童的个体特征与共性特征，为协调者提供故事框架、多样化问题及以理解为导向的材料，旨在减轻协调者的工作负担，同时提升儿童的互动参与度。评估结果表明，SparkTales不仅显著提高了协调者的指导效率与质量，也改善了儿童的参与程度，为未来支持跨语言协作的智能系统设计提供了宝贵见解。