The low natural science learning outcomes of the students' grade IV of SD Negeri Kedungpucang Puworejo was caused by external and internal factors. Intern factors came from the students' side individuals and external factors came from the students' outside of individuals. The purpose of this study was to determine the effectiveness of the cooperative learning model that is guessing word towards the natural science learning outcomes of the elementary school students grade IV. The present research was quantitative research using a posttest as the design. The population of the research was the 40 students of IV grade which obtained through sampling. The data was obtained using observation, interview, test, and documentation. The analysis result obtained with t-test was t-count3,2062, with dk = (n1 + n2 – 2) = 20 + 20 – 2 = 38 and the significant level of 5% with price t(1/2α;38) was obtained t-table = 2,0244. Because t-count ≥ t-table is 3,2062 ≥ 2,02809 so H0 was rejected. In conclusion, the learning cooperation model of guessing words can improve the natural science learning outcomes of the students of IV grade. The implementation of the learning model will help the teachers to innovate the learning activity so the learning outcomes can be reached optimally based on the expectation.

Online Learning activities that done by each School Institution are option issued by the ministry of Education and culture of Republic Indonesia as action to prevent the spread of Covid-19 ended. Used whatsapp as media for Online learning is one of the way of teachers do the flexible learning and easy to reach by the students Elementary School. The implementation of online learning through whatsapp also need evaluation to know what the purpose itself and learning barriers that need so that learning runs effectively. The purpose this research is to describe the result of evaluation of online learning programs via whatsapp in class V Sukoagung Elementary School. This study uses a descriptive qualitative approach with data collection techniques through interview, observation, questionnaires and documentation. The observation results are the implementation of online learning in class V Sukoagung Elementary School has been going well and deserves to be used as a substitute for directly learning during an emergency. Competencies belonged by teachers using pedagogy,social and personality show that teachers are able to provide online learning well, but teachers still not fully have a master of technology in learning activities.