Participants in the intervention group received an animation video-supported education program on preventive measures against acute respiratory tract infections. The program was delivered in a classroom setting over three weeks, in three sessions, with a total duration of 120 minutes. The content included respiratory infection transmission, actions to be taken during illness, hand hygiene, coughing/sneezing etiquette, avoidance of touching the face, social distancing, and healthy lifestyle recommendations.

Participants in the control group did not receive any education on preventive measures against acute respiratory tract infections during the data collection period. After completion of the post-test measurements, the education program was also provided to the control group.

The intervention consisted of an animation video-supported education program developed for first-grade primary school children. The program included a 15-minute animation video, question-and-answer activities, demonstration and practice of coughing/sneezing etiquette, and demonstration and practice of hand hygiene using a handwashing station. The education was delivered in three sessions over three weeks, with a total duration of 120 minutes.

Children's knowledge regarding preventive measures against respiratory tract infections was assessed using the Knowledge Form on Preventive Measures Against Respiratory Tract Infections. The form consists of 7 items. Each correct answer is scored as 1 point and each incorrect answer is scored as 0 points. Total scores range from 0 to 7, with higher scores indicating a higher level of knowledge.

Children's coughing/sneezing hygiene skills were assessed using the Coughing/Sneezing Skill Checklist developed by the researchers. The checklist evaluates appropriate protective behaviors during coughing or sneezing. Items are scored as "performed" = 2 points, "partially performed" = 1 point, and "not performed" = 0 points. Higher scores indicate better coughing/sneezing hygiene skills. Skill performances were video-recorded and evaluated by two independent experts.

Children's hand hygiene skills were assessed using the Hand Hygiene Skill Checklist developed by the researchers. The checklist consists of 12 items. Each item is scored as "performed" = 2 points, "partially performed" = 1 point, and "not performed" = 0 points. Higher scores indicate better hand hygiene skills. Children demonstrated handwashing behavior using a standardized handwashing station, and performances were video-recorded and evaluated by two independent experts.

Parents evaluated children's independent performance of preventive behaviors against acute respiratory tract infections using a visual analog scale. Higher scores indicate a higher level of independent performance of preventive behaviors.