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The research background starts from the number of teachers who have not done the worksheet development. The purpose of this research was to describe the worthiness of worksheet with the problem-solving method to improve critical thinking and problem-solving skills of fourth-grade elementary school students. This study is research and development design that produce the new product in the form of the worksheet with the problem-solving method. The research design applied was Nonequivalent Control Grub Design, using the observation sheet instrument, the test sheet, questionnaire and validation sheet as the data collection tool. The results showed that the worksheet with the problem-solving method was useful in learning. Worksheet with the problem-solving method can be used to train and improve critical thinking and the problem-solving skills of fourth-grade student elementary

Worksheet Development with The Problem Solving Methods at Grade IV of Elementary School Students