One of the primary challenges in online learning environments, is to retain learner engagement. Several different instructional strategies are proposed both in online and offline environments to enhance learner engagement. The Concept Attainment Model is one such instructional strategy that focuses on learners acquiring a deeper understanding of a concept rather than just its dictionary definition. This is done by searching and listing the properties used to distinguish examples from non-examples of various concepts. Our work attempts to apply the Concept Attainment Model to build conceptual riddles, to deploy over online learning environments. The approach involves creating factual triples from learning resources, classifying them based on their uniqueness to a concept into `Topic Markers' and `Common', followed by generating riddles based on the Concept Attainment Model's format and capturing all possible solutions to those riddles. The results obtained from the human evaluation of riddles prove encouraging.

翻译：在线学习环境面临的主要挑战之一是保持学习者的参与度。为增强学习者参与度，在线和离线环境中提出了多种教学策略。概念达成模型正是这样一种教学策略，其重点在于让学习者深入理解概念，而非仅仅掌握其字典定义。该策略通过搜索并列举用于区分各类概念示例与非示例的属性来实现。本研究尝试应用概念达成模型构建概念性谜语，并将其部署于在线学习环境。该方法从学习资源中构建事实三元组，根据其对概念的独特性将其分类为“主题标记”和“共性”，随后依据概念达成模型的格式生成谜语，并捕获这些谜语的所有可能答案。人类对谜语进行评估的结果令人鼓舞。