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All Journal Idealmathedu: Indonesian Digital Journal of Mathematics and Education
Wiworo Wiworo
PPPPTK Matematika
Mathematics

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Perbandingan Cara Mencacah Banyak Lintasan Terpendek antara Dua Titik pada Grid Wiworo Wiworo
Idealmathedu: Indonesian Digital Journal of Mathematics and Education Vol 7 No 1 (2020)
Publisher : Pusat Pengembangan dan Pemberdayaan Pendidik dan Tenaga Kependidikan Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53717/idealmathedu.v7i1.173

Abstract

The problem of counting the number of shortest paths between two points on a grid is a combinatorial problem that is often found in mathematical competitions or enrichment problems for various levels of school. There are several ways to count, namely by drawing a figure (visual representation), by the number pattern in the Pascal Triangle, and the combination formula. This paper discusses a comparison of each ways related to the problem at hand. On a simple grid all of the three methods can be used. On complex grids the combination formula is the only method can be applied, in some cases the technique of number pattern in Pascal Triangle is still applicable. On the grid with varied obstacles, foresight and flexibility is needed in the selection of the counting methods.
Tahapan Pemecahan Masalah dengan Diagram Bar pada Soal Cerita Wiworo Wiworo
Idealmathedu: Indonesian Digital Journal of Mathematics and Education Vol 8 No 2 (2021)
Publisher : Pusat Pengembangan dan Pemberdayaan Pendidik dan Tenaga Kependidikan Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53717/idealmathedu.v8i2.303

Abstract

Word problems are still one of the causes of students' difficulties in learning mathematics. The four stages of problem solving suggested by Polya are: (1) understanding the problem, (2) planning a strategy, (3) implementing the strategy, and (4) checking and interpreting the results. One of the strategies to solve word problems that can be applied is by making diagram. The bar diagram model is a form of visual representation that can help students to solve word problems. The use of bar diagram in solving word problems can be a strategy for students to bridge the transition from understanding problems and making mathematical expressions. The process of creating a bar diagram model represents a visualization of known and unknown information and helps to identify how this information can be used to solve the problems. This paper discusses problem solving stages using bar diagram to solve word problems.
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