This study aims to: (1) determine the level of learning experience of environmental change material of class X students of SMA Negeri 3 Klaten; (2) determine the relationship between learning experience of environmental change material and environmental attitude of class X students of SMA Negeri 3 Klaten; (3) determine the relationship between learning experience of environmental change material and reflective thinking skills of class X students of SMA Negeri 3 Klaten. This study is a correlational study using quantitative methods. This study was conducted at SMA Negeri 3 Klaten, with a sample of 215 class X students obtained through purposive sampling. Data collection was carried out through observation, a Likert-scale questionnaire, an essay test, student interviews, and documentation. The data analysis techniques used were descriptive statistics; prerequisite tests (normality and linearity); hypothesis testing with correlational analysis using the Pearson product-moment correlation; and a coefficient of determination test. The results of this study indicate that: (1) Students' learning experience of environmental change material is in the moderate category (62.33%); (2) There is a significant and positive relationship between the experience of learning environmental change material and students' environmental attitudes with a strong level of relationship (p = 0.000; r = 0.739); (3) There is a significant and positive relationship between the experience of learning environmental change material and students' reflective thinking skills with a sufficient level of relationship (p = 0.000; r = 0.414). This research can serve as a guideline or consideration for teachers when implementing environmental change learning.
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