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Pre-service teachers need to know the variety of learning methods and they should have the ability to plan learning strategies as well. This study aims to develop a module of mathematics learning strategy based on the review of articles published from 2014-2018. This study was conducted using Borg & Gall development model and the quality criteria used referred to Nieveen (valid, practical, and effective). The result shows that the module has met the validity criteria of 3.4, practical criteria of 82%, and it also has fulfilled the criteria of effectiveness. This module is recommended as a reference to study about recent mathematics learning strategy. A further study is needed to develop such a module based on international journals.

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Penelitian ini bertujuan untuk membentuk keterampilan pemecahan masalah melalui model IDEAL Problem Solving. Penelitian ini merupakan penelitian kualitatif kolaboratif dengan teknik pengambilan subjek penelitian yaitu purposive sampling. Pengambilan sampel dengan pertimbangan tertentu terfokus pada keterampilan pemecahan masalah subjek penelitian. Subjek penelitian terdiri dari subjek S.A, S.B, S.C, dan S.D. Keempat subjek penelitian dilakukan pengamatan, alat perekaman, dan wawancara untuk menggali informasi mendalam dan pendapat, sehingga diperoleh gambaran keterampilan pemecahan masalah subjek penelitian. Hasil penelitian menunjukkan bahwa keterampilan pemecahan masalah S.A, S.B, S.C., dan S.D melalui model IDEAL Problem Solving dengan teori pemrosesan informasi dapat terbentuk.

Children’s characteristics can become absolute, and it can be understood in child’s development. Children’s characteristics is not formed by itself but needs to be directed and provided guidance in knowledge, so supports children's creativity. This research aims to improve the cognitive abilities of children for their ability of sorting numbers through playing card numbers in Group A TK Handayani VI Bantarbolang Village Wanarata Bantarbolang sub-district, Pemalang Regency. This is a classroom action research (CAR) with 2 cycles, each cycle consisting of stages of planning, implementation, observation, and reflection. The subjects of this study were 14 students of Group A. The data collection methods used were observation and documentation. The instrument was tested for its validity and reliability. The data analysis technique used was descriptive qualitative and quantitative descriptive. The result shows that the pre-action activities scored to 35%, and reached an increase in the first cycle to 50%, then reached to 80% in the second cycle. It can be concluded that the research hypothesis, which states the number symbol printed on the playing cards can improve the children’s cognitive ability, was accepted because it was evidence from the result that there was an increase to the higher score.