development of learning tools through the wankat-oreovocz strategy toimprove mathematical problem solving ability of junior high school students

This study aims to produce quality teaching materials developed based on the wankat-oreovoczstrategy and to analyze the improvement of students' mathematical problem solving abilities who aretaught using the wankat-oreovocz strategy. this research is a development research using thethiagarajan 4-d development model (define, design, develop, dessiminate). the learning tools developedwere student books, student worksheets and tests of mathematical problem solving abilities. the trial oflearning tools based on the wankat-oreovocz strategy was carried out three times to obtain a qualitydevice. based on the results of the analysis, the learning device using the wankat-oreovocz strategy hasgood quality at the disseminate stage and the ability to solve mathematical problems learned using thewankat-oreovocz strategy increases at the disseminate stage. the results of data analysis indicate thatthe wankat-oreovocz strategy learning tool can improve students' mathematical problem solvingabilities.