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Using Rope in Mathematics Learning

A rope usually used to bunch something, but in realistic mathematics it can be used as a media in mathematics learning. Doing activity by using media like a rope can make students want to know what they will do with it, so the student will pay attention with mathematical lesson.

A rope is divided into twelve spaces by make a sign in each space of the rope. Then students arrange this rope to make many kinds of plane figures and doing various activities by using this rope. It is better if student work in pair in this activity.

Activities of students:

1. Make a square and determine the dimension.

This activity makes students think about characteristic of rectangle that it has sides with the same length.

2. Make various rectangles in various dimensions

This activity makes students think about how many possibilities to make rectangle by using twelve spaces of the rope with possibilities dimensions of rectangle.

3. Make various triangles

This activity makes student think about kinds of triangles made from twelve spaces of the rope and the possibility to make different triangle.

Finding Prize

There are many ways to make student interesting in mathematics lesson. One of them is make a problem close to their real life. Like in realistic mathematics, the problems are given close to their real life, so it can make students easy to understand the problems.

One of the problems is finding prize,

The first problem

Then the students answer the answer sheet

1. Without knowing prize each of stuff, determine which one is more expensive? Give your reason!
2. How many calculators can be bought by Rp.50.000? Give your reason!
3. How much the prize of one glasses? Give your reason!

The second problem

1. Which one is more expensive, an umbrella or hat? Explain!
2. How much the prize of three umbrellas? Three hats?
3. How much the prize of an umbrella and a hat?

The purpose of this activity is to build student’s understanding about elimination concept. Based on student’s answer seem that each student has their own strategy to solve this problem. Even sometimes the teacher does not think the alternative answer given by students. Students can express their own opinions and not glued on one-way solution. Various answers indicate that students free to give their answer and maintain it by give the reason, so their ability to communicate can be increased.