2024 No https://doi.org/10.1016/j.scitotenv.2024.173898 Yuan, Feng Asia Experimental Modeling Students Humidity Particulate Matter (PM) Other Indoor air quality Particle resuspension Activity patterns Relative humidity This study used experiments and modeling to examine how children’s activity and humidity affect particulate matter resuspension in classrooms. Movement speed, density, and humidity influenced PM levels, informing strategies to improve school air quality.