An Analysis of Glare of Multimedia Whiteboard and Display Screen in Primary School Classrooms
Objective To understand the glare of multimedia whiteboard/display screen used by primary schools in Wuxi and its influencing factors;To propose proper use of multimedia and avoidance of glare for reference.Methods From March to September in 2023,three primary schools with different multimedia equipment were selected to research the use of lights and curtains in all ordinary classrooms when multimedia equipment was used in class,and to test the gloss of their whiteboards/screens.The stratified sampling method was adopted to select 8 ordinary whiteboards,6 electronic whiteboards and 6 display boards and observe the influence of classroom light and external light on whiteboard/display screen glare at 13:00-14:30 pm in September.The lights were switched on or off,and the doors and curtains were opened or closed to find the best configuration for the whiteboard/screen to avoid glare completely.Results The number of glare positions of the School A's whiteboards and School C's display screens at different floors was different.The higher the floor,the more glare positions were observed.No glare was detected on School B's electronic whiteboards.School C's display screens produced glare when blackboard lights were switched on.Through many tests,the curtains and doors on the north and south side were controlled to find a curtain configuration completely preventing glare on sunny days.The gloss of School A's ordinary whiteboards,School B's electronic whiteboards,and School C's display screens are 61.6 GU,15.8 GU,and 67.79 GU respectively.Conclusion The degree of glare of whiteboard/display screen is related to its own gloss,side window brightness(curtain opened or closed),blackboard lights switched on or off,student seat position and other factors.At present,many classroom whiteboards/display screens have glare problems,calling for further management to avoid glare scientifically.
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