The ability of representation is one of the important components to develop students' thinking skills, because this capability is instrumental in helping students to transform abstract ideas into real idea and it can train students to improve problem solving skills with a variety of forms including pictures, diagrams, mathematical expressions, or words or written text. One model of learning that increases the ability of the mathematical representation is a learning model of problem-based learning. This research aims to: 1) determine a mathematical representation increased ability of students taught with problem based learning models 2) the interaction between the learning model of problem-based learning and grouping of students to increase the ability of the mathematical representation. This research is a quantitative research with an experimental method, that has pretest-posttest group design. The population was all students of class X SMA UnggulPidie Jaya by samples of two classes, namely class X3 as an experimental class and class X2 as the control class. The data collection was done by using test. Then analyzed by t -test and ANOVA at the 0.05 significance level after testing prerequisites are met. Based on the analysis we can conclude that: 1) to improve the mathematical representation of students who applied learning model of problem based learning is better than an increase in the ability of the mathematical representation of students who received conventional learning. 2) there is no interaction between the learning model and grouping of students to increase the ability of mathematical representation.
Low learning outcomes and lack of student activity on chemistry subject at X grade science students in SMAN 7 Pontianak was caused by low metacognition skills. Therefore, this research aimed to describe student‟s metacognition skills, learning activities, and learning outcomes in chemical subjects, as well as to determine the level of correlation among those variables. The method was descriptive method with correlational research. Students‟ metacognition skills were measured using MCAI questionnaire, students‟ learning outcomes by summative test documentation, and students‟ learning activities by learning activities questionnaires. The analysis showed that students‟ metacognition skill average was 79% in the developing category, which meant students can be helped toward realizing think if intrigued or supported, students‟ learning activities ware at the high category (51%), while students‟ learning outcomes was in the less category ( 38%). The correlation test (Pearson product moment test) results of students‟ metacognition skills with students‟ activity showed positive and significant correlation. Pearson correlation coefficient (r) was 0.542 as the moderate category and determination coefficient was 0.293. The correlation test results of students‟ metacognition skills with students‟ learning outcomes indicated that there was no correlation with the significant value of 0.136. Keywords: learning activities, metacognition skills, correlation, learning outcomes
ABSTRAKIndonesia masih memiliki angka prevalensi stunting cukup tinggi, yaitu 24,4%dan masih di angka standar yang ditoleransi WHO, yaitu dibawah 20%. Hal inidikarenakan tingginya angka anemia dan kurang gizi pada remaja putri sebelummenikah sehingga pada saat hamil menghasilkan anak yang stunting.Stunting merupakan sebuah kondisi gagal pertumbuhan dan perkembangan yangdialami anak-anak akibat kurangnya asupan gizi dalam waktu lama, infeksiberulang, dan stimulasi psikososial yang tidak memadai terutama pada 1000 HariPertama Kehidupan. Dalam jangka pendek perlu dioptimalkan intervensi gizispesifik dan sesnsitif, sedangkan strategi jangka Panjang perlu di intensifkanpeluang dukungan kolaborasi antar sektor daan multistakehoders guna menjaminkeberlanjutan dan pencapain sasaran akselerasi penurunan stunting. Selain ituperlu penerapan strategi Public Private Partnership dalam upaya penegakantatakelola (governance) diperlukan komitmen penjabaran operasional agarmenjamin program pencegahan stunting balita pedesaan pada 1000 HPK.
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