Hydrogels are three-dimensional, cross-linked, and supramolecular networks that can absorb significant volumes of water. Hydrogels are one of the most promising biomaterials in the biological and biomedical fields, thanks to their hydrophilic properties, biocompatibility, and wide therapeutic potential. Owing to their nontoxic nature and safe use, they are widely accepted for various biomedical applications such as wound dressing, controlled drug delivery, bone regeneration, tissue engineering, biosensors, and artificial contact lenses. Herein, this review comprises different synthetic strategies for hydrogels and their chemical/physical characteristics, and various analytical, optical, and spectroscopic tools for their characterization are discussed. A range of synthetic approaches is also covered for the synthesis and design of hydrogels. It will also cover biomedical applications such as bone regeneration, tissue engineering, and drug delivery. This review addressed the fundamental, general, and applied features of hydrogels in order to facilitate undergraduates, graduates, biomedical students, and researchers in a variety of domains.

Humans are social creatures and in everyday life always interact with other people. Therefore, communication skills are very important to build good relationships with other people around them. The purpose of this study was to determine the relationship between self-concept and interpersonal communication. The population of this study were students of SMPN 2 Tutur. The sample used was 98 respondents who were taken using quota sampling technique. Collecting data using interpersonal communication scale and self-concept scale. The data obtained were then analyzed using correlation analysis. The results of the data analysis show the correlation coefficient is 0.581. The result show that there is a relationship between self-concept and interpersonal communication, where when a person's self-concept is good, the interpersonal communication will be better. Conversely, when a person's self-concept is bad, the interpersonal communication will be worse.

This studyaimed to develop pantomime textbooks as an alternative source of learning performing arts for children in elementary schools and to determine its feasibility. The research method was R&D referring to Borg and Gall's theory which was modified into 7 steps. The product of the study was a text book entitled "Pantomim Asyik ala Kak Prop". The score of validity test from material experts was 56, with an average of 3,5 and a percentage of 88% in very good category. Then, the score of validity test from a linguist was 27, with an average of 3,4 and a percentage of 84% in very good category. Moreover, the results of limited product trials through the teachers' response questionnaire found a score of 572,with an average of 3,6 and a percentage of 89,4% in very feasible category. Meanwhile, the students' response questionnaire found a score of 565, with an average of 3,5 and a percentage of 88,3% in very feasible category. It was concluded that the pantomime textbook was very suitable to b used as an alternative source of learning performing arts for children in elementary schools.

This study aims to analyze the needs and develop pantomime textbooks as an alternative learning resource for children's performing arts in elementary schools. The pre-research data collection technique was taken through interviews with three companion teachers and three students in three different elementary schools in Rembang Regency. Data strengthening was carried out through interviews with the Rembang Regency Education Office and interviews with pantomime experts in. The conclusion of the overall interview results stated that the existence of pantomime textbooks was an alternative source of learning. for the performing arts of children in elementary school is very much needed. This research method uses R&D refers to Borg and Gall's theory which has been modified into 7 research steps, namely: 1) information gathering, (2) research planning, (3) initial product design development, (4) product design validation, (5) product design revision, (6) product testing, (7) product testing results revision. The result of the research is in the form of a textbook entitled "Fun Pantomime ala Kak Prop".

The pandemic COVID-19 has encouraged the implementation of distance learning (DL) which is applied to all, including children with disabilities. The DL guidelines were launched by the Ministry of Education and Culture in order to continue to fulfill the disability right to education. This literature study research analyzes the evaluation of media using the QUOTA (Qualified, Up to date, Objectivity, True, Accurate) approach. The results show that guidance is good enough as a first step in providing information for parents, educators, and children. Along with the challenges and obstacles of DL felt by all parties, the DL guidelines for children with disabilities need to be updated regularly and adjusted to the situations and obstacles that arise in the implementation of DL Keywords: children, COVID-19, disability, distance learning, guidelines