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This study aims to determine the steps for developing and assessing the quality of virtual learning-based lesson plans using Google Classroom for Grade 5 students at Muhammadiyah Suronatan Elementary School Yogyakarta with Thematic Material Theme 1 Sub-theme 1. This study used the research and development (R&D) method, specifically the model developed by Borg and Gall. The research subjects were curriculum experts, subject matter experts, learning experts, and teacher assessors. The data collection technique was product assessment. From the results of the assessment of the quality of the learning plan by the curriculum expert, a score of 75 was obtained with a category of "good", the subject matter expert obtained a score of 75 with a category of "good", the learning expert obtained a score of 90 with a category of "very good", and the average score from the expert validation was 80 with a category of "very good". The assessment of classroom teacher responses yielded an average score of 92.5, categorized as "very good." The final assessment results from the validation experts and teachers yielded a score of 86.25, categorized as "very feasible," indicating that the virtual learning-based lesson plan using Google Classroom for fifth grade at Muhammadiyah Suronatan Elementary School Yogyakarta is very good to use as an alternative learning method for students and teachers.