A Systematic Approach to Evaluate the Use of Chatbots in Educational Contexts: Learning Gains, Engagements and Perceptions. - Wei Qiu; Chit Lin Su; Nurabidah Binti Jamil; Maung Thway; Samuel Soo Hwee Ng; Lei Zhang; Fun Siong Lim; Joel Weijia Lai (Comput., 2025)