Research on User Interface Design and Interaction Experience: A Case Study from "Duolingo" Platform

INTRODUCTION: In today's information age, user interface design and interaction experience are crucial to the success of online platforms. OBJECTIVES: Through in-depth analysis of the user interface design features and user interaction experience of the "Duolingo" platform, this study reveals the potential correlation between them and proposes effective improvement methods to enhance user satisfaction and efficiency. METHODS: Interaction design principles were adopted to guide the improvement and optimization of the user interface. These principles include usability, consistency, and feedback to improve overall user satisfaction with the platform by actively considering user behavior and needs in the design. At the same time, specific mathematical models and equations are used to quantitatively analyze the efficiency and smoothness of the user interaction process, providing designers with more precise directions for improvement. RESULTS: Optimized user interface design and interaction experience can significantly improve user satisfaction and usage efficiency. Users operate the platform more smoothly, which provides useful reference and guidance for the design and development of e-learning platforms. CONCLUSION: Through in-depth analysis of the case of the "Duolingo" platform and the introduction of user experience evaluation methods and interaction design principles, this study has come up with a series of effective improvement measures and verified their effectiveness through experiments. It has certain theoretical and practical significance for improving the user experience of online learning platforms and promoting the design and development of Internet products.