The purpose of this research was to find out the impact of online learning in students' numeracy skills in addition and subtraction of fractions in grade 5 elementary school. This research used a quantitative approach with a pre-experimental method, and the treatment is an online learning system. The data collection technique used tests. The test given is the students' numeracy skills in addition and subtraction of fractions in grade 5 elementary school. Data analysis in this research used descriptive statistics (N-Gain) and the mean difference test (Mann-Whitney) used the SPSS Statistics 22 application. The results of this research indicate that the student's N-Gain score is 0.39. This indicates that there is an increase in numeracy scores in the moderate category, and based on the average difference test, sig. which is 0.002 smaller than 0.05 (α). Its means there is a significant increase in students' numeracy skills using online learning. Keywords: Online Learning, Numeracy, Addition and Subtraction of Fractions

The article aimed to analyze the students' critical thinking and problem-solving skills in making paper airplane toys. It is phenomenology research that was conducted on elementary school students with a total of 15 students. The data collection techniques used documentation and interviews. Because of the form of the data obtained descriptive, the analysis was carried out qualitatively, namely by coding with the flow of data reduction, data presentation, and conclusion. The results showed that the students apply critical thinking and problem-solving concepts in making paper airplane toys. Several other factors were students planning and designing carefully, measuring in detail with mathematical concepts and estimating what allows paper airplanes to fly for a long time or even for a short time. This research contributed to creating learning that develops critical thinking skills and problem-solving through simple things close to children's lives (contextual). Keywords:  STEM, Critical Thinking, Paper Airplane Toys

This study aims to investigate the relationship between online learning and scientific literacy of students in fifth grade of elementary school in the Covid-19 era. Employing a correlational research design, this study involved 54 fifth grade students of an elementary school in Bandung City, Indonesia. The data were collected using a scientific literacy test referring to the indicators of PISA 2018 and a questionnaire in an online learning evaluation. The analysis of the data was carried out using descriptive statistics through calculating the average and percentage scores. The data were also analyzed using inferential statistics in the form of the Pearson correlation test to determine the relationship between online learning and scientific literacy. The results of this study revealed that, based on the Pearson correlation test, the sig score was 0.81. There was no relationship between online learning and scientific literacy of fifth grade students of elementary school. Therefore, efforts should be made to improve the scientific literacy of elementary school students, one of which is through optimizing online learning.

This study aims to analyze the differences in the nature of science in thematic textbooks and non-thematic science textbooks in elementary schools. The study approach used is qualitative with a descriptive method. The subjects in this study were thematic textbooks and three non-thematic science textbooks in grade VI elementary school. The data collection technique used is a documentation study by analyzing the concept of the nature of science in each of the essential competencies presented in the book, the results of the analysis in the Textbook are analyzed descriptively and presented in percentage form. This study indicates a difference between aspects of the nature of science in thematic and non-thematic science textbooks in grade VI elementary school. Non-Thematic textbooks have a higher percentage of science's nature than the nature of science in thematic textbooks. The product aspect has the highest rate, 97%, and the lowest aspect is the creativity aspect, which is 25%. This study is fundamental to analyze in detail the components of science's nature, which can later be used as a basis by teachers in choosing science textbooks in elementary schools so that learning can be carried out correctly and the nature of science can be taught to students.