Studi Kasus Penggunaan Kalkulator Texas Instrument TI 89 pada PBM Matematika di SMK MUHAMMADIYAH IV YOGYAKARTA
Disampaikan Pada Seminar Nasional
“National Seminar on Science and Mathematics Education: The Role of
IT/ICT in Supporting the Implementation of Competent-Based Curriculum”
di Universitas Pendidikan Indonesia, Bandung
25 Agustus 2003
By : Dr. Marsigit,M.A
Reviewed by : Samsul Feri Apriyadi
The calculator is assistive devices in learning mathematics process. This is related to function of the calculator as tool for calculating mathematics. Case studies conducted at SMK Muhammadiyah Yogyakarta IV associated with the discussion of the material equations and inequalities. This case study noted some of the results include: 1) graphing calculator can be used to match the graphic image, match the answer of set and provide real experience of drawing graph, 2) methods in solving matter equations and inequalities can be viewed as command, symbolic manipulation and graphs on the calculator, 3) graphing calculator is useful to indicate answers that were previously calculated without a calculator and accelerate problem solving metematika (Marsigit: 2003).
But there are constraints experienced by students in using the graphing calculator it are difficulties in paraphrase sentences in the language of mathematics into the calculator and expressing of view into the calculator display mathematical sentence. After researchers to collect data through following step: observation as data collection techniques. Where researchers acting as a mathematics teacher to teach a discussion of equality and inequality. Thus, researchers can obtain whatever information is needed. And also used the interview as a comparison to check the correctness of data obtained from observations.
Some of the important command of the Texas Instruments TI 89 calculator
- Solve Command
Solve command which is one order of feature algebra. This command is used to solve of the problem.
- Simult Command
Simult command is one command of the feature matrix. Solve based equations in the matrix. Examples of questions that can be completed is a system of linear equations three variables
- Expand Command
Expand command is one command of the feature algebra. The solution is based on the process of elaboration. Examples of questions that can be completed is a matter of determining the unknown quadratic equation roots.
Stages use the calculator as a learning tool in mathematics at SMK Muhammadiyah Yogyakarta IV, can be done as follows: an understanding of the importance graphing calculators; understanding of theory and use of graphing calculators in solving matter equations and inequalities; the process of entering data about the calculator; interpretive display calculator graphs and draw conclusions. From the use of Texas Instruments TI 89 Calculator in teaching and learning in that students can more easily find a solution to the roots of an equation that will be depicted on the chart and more students master a learning tool.
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