Research on how the use of social robots helps improve English as Foreign Language (EFL) young learners' pronunciation and willingness to communicate (WTC) is understudied. This study developed a robot and tangible objects (R&T) learning system and examined its impact on elementary EFL learner's English pronunciation and WTC. The R&T system consists of a robot, a tablet, a cellphone, and sets of tangible objects that enable students to physically interact with the system. A total of 29 elementary students were engaged in location-specific tasks with the R&T system 40 min a day for five days. Data were collected through pronunciation tests, willingness to communicate questionnaires, and video recordings of students' interaction with the R&T system. Paired-samples t test showed students improved in both pronunciation and willingness to communicate after interacting with the R&T system. Video recordings found active engagement in the form of multiple tries and active help-seeking. Finally, a missed learning opportunity captured in the video data provided directions for future refinement in robot and task design.