Judging from the grade of the score.<br>The knowledge test of the samples shows that the average knowledge score after watching video media is significantly higher than that before watching video media. 05. The average knowledge score is higher than the first 8 points of watching video media. 36 points, in which before watching video media, the average knowledge score of most sample groups is low (x Tim = 5. 86,SD = 2。 36) and video media, the knowledge scores of most samples are medium (x Tim = 14. 23,SD = 1。 15) Because researchers have developed video media based on ADDIE model.
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