By : Drs. Marsigit MA
Reviewed by : Bowo Widyo Laksono
Vertical mathematics is a process that occurs within the mathematical system itself, for example: the discovery of strategies to solve problems, linking the relationship between concepts or applying mathematical formula / formulas findings. After this training, participants are expected to be able to:
1. make the preparation process of teaching and learning rational numbers in school with the principles PMRI
2. develop learning resources for teaching and learning rational numbers in school with the principles PMRI
3. develop assessment activities for teaching and learning rational numbers in school with the principles PMRI
4. implement the teaching-learning process rational numbers with PMRI principles.
We can examine the rational numbers in junior high school mathematics learning in 2 (two) sides of the formal position of rational numbers in the context of the curriculum and syllabus, and a review of substantive rational numbers itself. The purpose of learning rational numbers in junior high can be mentioned as follows:
1. Solve contextual problems and find the concept of rational numbers of the contextual issues are solved.
2. Understand the concept of rational numbers, explain the link between concept and applying the concept of rational numbers, flexibly, accurately, efficiently, and appropriately, in solving problems
3. Using the reasoning on the pattern and nature, to manipulate and make generalizations about the rational numbers.
4. Communicating the concepts and the use of rational numbers
5. Having respect for the use rational of numbers in life.
Learning through PMRI presumably rational numbers can be concluded that students should be given opportunities to explore and reflect on alternative concepts about ideas that affect learning fractions later and students should be given opportunities to explore and acquire new pengetahauan about fractions by establishing that knowledge to himself . Teachers need to revitalize itself so as to mendudukan itself as a facilitator, to develop interactive learning, and provides the opportunity for students to be active.
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