PHET and PBL: do they work well together in improving mathematical critical thinking and problem solving ability?

Objectives: This research aims to examine the effectivenessof the use of PBL combined with PHET rather than PBL about mathematical critical thinking and problem-solving ability. Methods: This research employed an experimental approach involved a sample of 63students of grade VIII’s favorite MTs in Sidoarjo Regency, East Java, divided into 2 classes (PBL classcombined with PHET and regular PBL class). The data were analyzed with descriptive statistics combinedwith Mann-Whitney’s statistical test. Findings: This research finds out that there is no difference in theinfluence of the intervention on the application of PBL combined with PHET with the usual PBL groupin developing students’ mathematical problem-solving ability, and there are differences in the influence ofinterventions on the implementation of PHET integrated PBL and the application of ordinary PBL indeveloping students’ mathematical critical thinking ability. Conclusion: Based on findings, the importanceof providing adequate computer facilities for students when they want to implement website-basedlearning media such as PHET.