Realistic Mathematics in Snake and Stair Game

Standard

Addition and subtraction number concept is introduced to students since they are in grade 1 in elementary school. They study addition and subtraction for number 1 to 100. In grade 2 They study mixed number. For example, What is solution 26 + 4 – . . . = 8 ?. Almost students can not answer this question directly because it is abstract problem. Teacher must change it into real context which is easy for students to understand. In this article, writer introduces Snake and stair (Ular tangga) solution.

Snake and stair game is a game which is played by four students. Each student has a pawn, and he/she gets opportunity to shack cube. Cube has number 1 to 6. A student will put his/her pawn building on number in cub that he/she gets. Student’s cub which stand in stair will climb that stair but in snake will reduce, so they use mathematics process in this game.

Snake and Stair Game

Snake and Stair Game

Example :
1. A student’s pawn put in number 11 than he shack a cube and get number 5, so he move his pawn 5 step . Finally, the student put his pawn in number 46 because he got stair. How many extra point that student get ?

This is mathematics model about it :
11 + 5 + . . . = 46

2. A student’s pawn put in number 51 than he shack a cube and get number 3, so he move his pawn 3 step . Finally, the student put his pawn in number 26 because he got snake. How many extra point that student get ?

This is mathematics model about it :
51 + 3 + . . . = 26 or 51 + 3 – . . . = 26
If Teacher gives abstract problem, some students can not solve it. This illustration can help students find model and know how to solve many problems about it.

About Zetra

Zetra Hainul Putra (1985) grew up in the small city in Pariaman-West Sumatera, Indonesia. He studied in Public Elementary School 01 Kabun Cimpago (1991 – 1997), Public Junior High School 05 Pariaman (1997 – 2000), and Public Senior High School 02 Pariaman (2000 – 2003). Then, he enrolled in a program of Mathematics at mathematics Department, Mathematics and Science Faculty at Riau University. He graduated in 2007 and became a Mathematician. After that, he worked in Moslem Junior High School As-Shofa Pekanbaru and also an assistant lecturer in Rab University Riau, Indonesia. He taught Number theory, Statistics, Linear Algebra and Mathematic logic until 2009. Finally, He received a scholarship to continued his study, Master degree on Mathematics Education, at Sriwijaya University collaboration with Utrecht University unti 2011 about Realistic Mathematics. Since 2013, he worked at University of Riau.

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