By Dr. Marsigit, MA
Reviewed by Naafi Awwalunita
As we know, realistic mathematics concern about construction and concrete content as the first step for students to again mathematics concept. Real things and another objects among us in our environmental could actually used as learning-teaching mathematics when the students are about constructing the relation between concepts of mathematics trough social interaction.
According to Hans Freudental in Sugiman (2007), mathematics is a human activities and it is indeed need to be related with reality. Hence, when students are learning mathematics, the mathematical thinking is actually going on student’s mind. In this article, Dr. Marsigit would later describe and analyze about mathematics teaching learning which recorded in the video tape recorder is one of million ways that teachers could choose from. Using video tape recorder, the writer hope that later on, the teacher could learn more on how:
1. Prepare mathematics teaching learning in Junior High School based on PMRI principal.
2. Develop learning sources for mathematics teaching learning process in Junior High School based on PMRI principal.
3. Develop assessments activities for mathematics teaching learning in Junior High School based on PMRI principal.
4. Do the mathematics teaching learning in Junior High School based on PMRI principal.
Implementation of PMRI could barely describe as realistic type that has a bottom-up type of approaching method where the student develop their own model and later, that model become basic understanding to develop formal mathematics. There are two models which happen in that process such as model of situation and model for formal mathematics. In the realistic model which emerges from informal strategy as student respond over real problems for that later they will form it as a formal mathematics. This process is actually as the same as the history of mathematics development itself (Sugiman, 2007).
By observing and analyzing the use of video tape recorder for mathematical study, the teacher use realistic approach so that other teacher could test it and look for another option to develop any concepts or ideas about concrete things and objects among us which can be used as mathematics teaching learning context in building mathematical relation through social interaction.
There are some pictures in this article which describe about what kind of action did the writer record for his research. It showed that the writer use video tape recorder for geometry teaching learning. It showed that there are two or more students tried to find a formula for ball vast by covered up the surface. There were also sequence caption that show on how two or more students using a can and cone model also sand to find the formula for cone’s volume.
Using video tape recorder for mathematics teaching learning with realistic approaching gives us a lot of advantages:
1. Teachers could have a chance to test concrete things and objects among our environment which can be used as mathematics teaching learning context in building mathematics relation through social interaction.
2. Teachers could have a chance to gain and reflect realistic mathematics teaching learning concepts.
3. Teachers could have a chance to exchange experiences with another teachers about developing realistic mathematics teaching learning.
4. Teachers could have a chance to reflect their preparation in realistic mathematics teaching learning process in Junior High School based on PMRI’s principal.
5. Teachers could have a chance to reflect the development of learning sources for mathematics teaching learning based on PMRI’s principal.
6. Teachers could have a chance to reflect the development of assessment activities for mathematics teaching learning based on PMRI’s principal.
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