The study aims to investigate the effects of an online learning model, Read-Answer-Discuss-Explain-Create (RADEC), on the emergence of creative ideas and projects for 7th-grade students when designing local solutions to global warming problems. Case studies were used in this research by implementing learning in environmental science concepts. This one-shot case study research was conducted on 30 7th-grade students (16 boys and 14 girls) selected through the purposive sampling technique. The research was conducted in Bandung, Indonesia. Five stages are carried out in the RADEC learning model, including the Read-Answer stage, where students answered pre-learning questions outside the classroom; the DiscussExplain stage, where students responded to their pre-learning questions in small and large groups; and the Create stage, where students agreed on solutions to a problem and realised the product of a creative project. Qualitative data were collected through worksheets, posters, and guided interviews. Although students have not been able to demonstrate originality thinking skills, the implementation of the online RADEC model stimulated students’ fluency and flexibility thinking skills. This was evident from the many creative ideas or projects of students. Besides, students could decide on ideas or group projects to solve global warming problem with rational considerations. Although the online RADEC model has not been able to produce original creative products, its implementation has stimulated students to think creatively about solving global warming problems. In addition, the implications, limitations, advantages and potential of further research are discussed in this paper.