This document discusses key principles of ergonomics as they relate to educational facilities design. It covers anthropometry, which involves measuring the human body and using those measurements to scale facilities. Specific body measurements that should be considered include leg length, hip width, shoulder width, and eye height. The document also discusses factors like thermal comfort, visual comfort, and acoustical comfort. Thermal comfort can be achieved through building orientation, shading, ventilation, and landscaping. Visual comfort requires adequate and glare-free lighting. Acoustical comfort involves controlling noise levels so students can clearly hear teachers over background sounds.