THE EFFECT OF GEOGEBRA-AIDED PROBLEM BASED INSTRUCTION MODEL AND MATHEMATICAL DISPOSITION ON PROBLEM SOLVING ABILITY

   This research aims to determine: (1) The effect of PBI in GeoGebra Assisted Learning through problem based solving. (2) Difference of ability for solving between student’s taught by PBI in Geogebra Assisted Learning with Direct Instruction. (3) Difference of ability for solving from mathematical disposition. (4) The interaction between Learning Model and mathematical disposition. The research method that used is factorial design. The study sample in this study were students of class XI Kep A and XI Kep B. Technique of analyze data used is two way anova. From the results and analysis  of data obtained the study are as follow: The effect of PBI in Geogebra Assisted Learning through problem based solving with the medium category then the result of effect size is 0,5886, there is difference significance between problem based solving with PBI in Geogebra Assisted Learning and Direct Instruction with significance result is 0,001, there is difference significance between student’s learning in high mathematical disposition and low with the significance result is 0,000, and there is significance interaction between Learning Method and Student’s mathematical disposition. Keywords: Problem Based Instruction, Geogebra Assisted Learning, mathematical disposiion, Problem  Solving