Abstract:
The purposes of this research were (1) to study the effectiveness index of of lesson plans using the phenomenon-based learning experience and (2) to assess and compare preschoolers the growth mindset characteristics before and after the experiment. The research participants consisted of 25 preschoolers aged 3 to 4 years. Each 50-minute experimental session was executed four times a week for a total period of eight weeks. The lesson plans were implemented through four main phases: (1) Select the phenomenon of interest and observe the phenomenon of joint research. 2) Identify the issue and probe the phenomenon of interest. (3) Take action through a problem-based inquiry learning process. (4) Presentation, actual reflection and assessment. The research instrument used was a performance rubric for the preschoolers the growth mindset characteristics. Statistical analyses used in the present study were the effectiveness index and calculations for mean, standard deviation, and t-test. The major findings were as follows: (1) the index of effectiveness of the lesson plans was equal to 0.8127, indicating that the participants showed an 81.27 percent improvement in their growth mindset characteristics; (2) the growth mindset characteristics of preschoolers after the experiment were significantly higher than before the experiment at the .05 level of significance. The results of this research indicate that using a phenomenon-based learning experience can enhance the growth mindset characteristics of preschoolers.