Zulkifli Matondang, Enny Keristiana Sinaga, Harun Sitompul
The research aims to develop statistics textbooks and measure their effectiveness in improving the statistical reasoning abilities of students in building engineering education. This study is based on the results of learning statistics courses that are still low. In general, studying statistical material requires the ability to reason in solving problems in the context of everyday life. To help understanding concepts, statistics textbooks need to be developed with SPSS software-assisted analysis that can be used in learning. This research was conducted on students majoring in PTB FT Unimed. This type of research is research and development. This research procedure was modified from the 4-D learning device development model which consisted of 4 stages namely define, design, develop, and disseminate. Data analysis was performed covering the validity, practicality, and effectiveness of the textbooks that were developed. The results showed that: 1) expert validation on the feasibility of statistics textbooks obtained very good categories with details of material experts with an average score of 79.29, media experts with an average score of 85.33 and linguists with an average score 77.78, 2) lecturers' responses about the practicality of statistics textbooks were obtained in a very practical category wit h an average score of 85.37 and 3) the use of statistics textbooks was quite effective in increasing student reasoning with at count of 11.44 and significance 0.00. Based on the data analysis and effectiveness test, it can be concluded that the developed statistical textbook can improve students' reasoning abilities. © IJSTR 2019.
Universitas Negeri Medan, Medan, Indonesia
