### LEARNING TRAJECTORY MATEMATIS DALAM KONSEP KELILING BANGUN DATAR BERDASARKAN HASIL BELAJAR SISWA KELAS IV DI SEKOLAH DASAR

#### Abstract

Effective mathematics learning needs to involve students' learning trajectory so that the learning process can run in accordance with the applicable curriculum. Therefore, researchers are interested in studying based on the trajectory of mathematics learning. In learning mathematics, especially on the perimeter of plane figure, there are still many students who have not been able to understand the concept of the perimeter of plane figure. This is evidenced when students are given a math problem about the circumference of a flat shape, the student is working on the problem in an inappropriate way, for example, the formula for the perimeter of a square is confused with the formula for the perimeter of a rectangle. In addition, there are still many students who have not been able to describe some of the important points contained in the question. The aims of this research are (1) to describe learning trajectory based on high, medium, and low learning outcomes in mathematics subjects with circular shapes (square, rectangle, and triangle), and (2) to describe the differences between students' learning trajectory and learning outcomes. high, medium, and low on learning mathematics in the concept of perimeter of plane figure in elementary school. This research design uses descriptive qualitative research method, where the researcher will reveal the diversity of students' learning trajectory descriptively. This research was conducted in an elementary school in the city of Bandung with three subjects each from each category of learning outcomes. The research instrument used was in the form of question sheets and interviews. The results of this study are (1) Learning trajectory students with high learning outcomes are able to understand the concept of perimeter of plane figure. This is evidenced by them answering well and thoroughly according to their understanding. (2) Learning trajectory students with moderate learning outcomes are also able to understand the concept of perimeter of plane figure. However, they focus more on mathematical models, so that from the results of the answers there are important points that are missed. (3) Learning trajectory of students with low learning outcomes are still not able to understand the concept of perimeter. This can be seen from the results of short answers and there are still inaccurate answers

#### Keywords

learning outcomes, perimeter of plane figure, learning trajectory, mathematics

#### Full Text:

PDFDOI: https://doi.org/10.17509/jpgsd.v8i1.60445

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