Student's higher order thinking skills on problem solving based on jumping tasks

Most of the students' Higher Order Thinking Skills (henceforth, HOTS) are still weak in term of complex problem solving and thus to face this condition a research about problem solving learning by giving jumping tasks to the ninth grade students of junior high school under the subject Power of numbers and form of root is conducted to know their Higher Order Thinking Skills. This research employed mixed method combining Thiagarajan 4D model to develop the learning instruments and experimental research design to know the effect of the learning instruments implementation on the students Higher Order Thinking Skills. The students of SMPN 2 Balung were the subject of this research and three classes were chosen as the sample of the research consisting of two classes as the experimental class and one class as the control class. Learning material was not only developed to make the students able to solve problem but also provide jumping task exercises which designed for the students to solve problem in order to improve their Higher Order Thinking Skill. The research sample was given an essay test to measure their HOTS. The learning instruments developed fulfilled the criteria of valid, practical, and effective. The result of normality and homogeneity tests showed that the data were normally distributed and homogeneous, One-way ANOVA showed the value of sig. 0,000 (p