Sri Wulandari’s scientific contributions

This study aims to determine the effect of guided inquiry models and modified free inquiry on critical thinking in the classification of living things. This research was conducted at SMPN 25 Pekanbaru. The research was carried out in the form of an experiment. The study population was class VII. The sample was taken using simple random sampling technique, which consisted of 3 classes, namely the experimental class 1 using the guided inquiry model, the experimental class 2 using the modified free inquiry model and the control class using the conventional method. The research design used a pretest and posttest control group design. Data were analyzed by using ANOVA test (one way ANOVA). Based on the result data, the average critical thinking result of the classification of living things with an average value of the experimental class 1 is 77.84 (good), the experimental class 2 is 70.93 (good) and the control class is 43.29 (poor). In the experimental class class 1, the critical thinking average is higher than the experimental class 2 and the control class. Based on the results of the ANOVA test, it was stated that the use of guided inquiry models and modified free inquiry had a significant effect on students' critical thinking in the experimental class 1, the experimental class 2 and the control class with a significant value (0.000) <alpha (0.05).

This study aims to determine the practicality of life skill based student worksheets (LKPD) of class XI of high school on respiratory system material. The method used in the study was a research and development. The data source of this research was from two science teachers and thirty one students of class XI. The LKPD practicalities data was obtained through questionnaires practicalities of the device which was given to teachers and students.The analysis of the data used descriptive analysis that is to categorize the average score on learning process. Based on the analysis of the data, practicality of LKPD through three assessment data, it showed that the first observation data with anaverage 97,4 % in a good category, the second dataquestionnaire responses of teachers with an average 95 % in a good category, and the third data questionnaire responses of students with an average 91% in a good category. Based on the analysis of the data, the practicality of the student worksheets has an average with the excellent category for all aspects. This shows that life skill based worksheet can be used as a biology learning medium in high material school.