16. Do you know about the function of protein?
17. Do you know the dangers of underweight children?
18. Do you know the dangers of a child who is overweight?
19. Do you know the solution for underweight and overweight children?
20. Do you know about the nutritional needs of children during their growth period?
N-Gain Nilai Value Analysis
The normalized gain or N-Gain value analysis aims to determine the effectiveness of using certain methods or actions in one group pretest posttest design research. The formula used in calculating the N-Gain value is shown in Equation (1).
N Gain= (Skor Post-test-Skor Pre-test)/ (Skor Ideal-Skor Pre-test) (1)
Where the ideal score is the maximum value that can be obtained by the respondent when filling out the pre-test and post-test questions. There are several categories of N-Gain value acquisition that can be used as a template for determining the final result. Table 3 shows the breakdown of N-Gain value acquisition categories according to Prastiwi and Nurita, 2018.Â
RESULTS AND DISCUSSION
Table 4 shows the results of the gain value analysis. The calculation of the gain value is carried out to show the quality of improving the skills possessed by each respondent after an action is taken (Serevina et al., 2018). Based on the data in Table 4, it is known that the average N-Gain value is 0.56 (56%) indicating that the method or treatment carried out by the use of PowerPoint media in healthy cooking food education activities is very effective. With a minimum N-gain score of 0.14 (14%) and a maximum of 0.95 (95%). In line with research conducted by Anshori and Wulandari (2020) which states that if the N-Gain presentation value is > 40%, then it is included in the category of effective interpretation. The results of the effectiveness of the PowerPoint media are influenced by the respondents' initial pre-test scores which are quite small. This shows that knowledge about healthy cooking food that is useful for maintaining nutrition is not well known in the community.
