This study aims to development of media mobile learning based on android for learning the biology of nervous system material and to determine the effectiveness of media mobile learning based on android in improving students' conceptual understanding. The type of research used was development (R&D), population, and sample, namely class XI IPA 2 as many as 30 students at one of the public high schools in Bogor Regency which was carried out from January to May 2020. This development research procedure used a model (4D) consisting of 4 stages, namely Define, Design, Develop, and Disseminate. The instruments   used   were   tests (pre- test and post-test), response questionnaire sheets, and documentation. The implementation of deployment trials was carried out using a one group pre-test and post-test research design. The results showed that the media mobile learning got a very feasible category. This is based on the average percentage of the assessment from the expert validation team, namely 82.75%. Media mobile learning Android-based on learning the biology of the nervous system material can improve students' understanding of concepts and almost all students respond positively. This is proven by an increase in the results of the pre-test and post-test values after using the application so that the N-gain value obtained is 66.5.

Tanjung Rising Coastal, located in Dendang Village, Bangka Belitung Islands, has a large variety of substrates and organisms. One of the types of marine life studied is the Mollusk Phylum including the Bivalve and Gastropod classes. To find out the diversity of Bivalvia and Gastropoda, this study was carried out on Tanjung Rising Coastal, Bangka Belitung Islands. The study was conducted in December 2020-August 2021, using belt transect method with purposive sampling technique. Samples were collected at station 1 with a sandy substrate and station 2 with a muddy substrate. The results of this study found 1,372 individuals from the Bivalvia class consisting of 7 families and 12 species, while from the Gastropod class yielded 2,630 individuals consisting of 5 families and 7 species. The diversity and evenness index at both stations is relatively low which means that there are species that dominate, because both stations have good habitats for the dominating species. In addition, temperature, pH, salinity, depth, and strong currents showed good values for Bivalvia and Gastropoda habitat. In summary, Tanjung Rising Beach is still a good habitat for invertebrate animals, especially Bivalvia and Gastropoda.

Limited information about Mollusks in Menganti Beach, Central Java has been a strong basis for researching its diversity. This study aimed to determine the mollusks' diversity in Menganti Beach, Kebumen. The research was conducted from April to May 2020, using a survey method and purposive sampling technique. Sampling was undertaken at three stations with the belt transect method. The results revealed 37 species with 1767 individuals from the Class Bivalvia, Gastropods, and Polyplacophora. Based on the diversity index value H '= 3.3, station 1 with the rocky sand substrate is the best for mollusks' habitat. The H' value at station 1 shows the highest diversity that the base substrate is dominated by sand and rocks, which are very supportive of mollusks. It is supported by the evenness value (E), which indicates evenly distributed species, and dominance value (D), which does not indicate a species' dominance. The a-biotic parameters at the three stations obtained an average morning temperature of 29 oC and 30 oC in the afternoon, pH of 7, and a salinity of 30 ‰ so that these values support the Mollusk habitat at Menganti Beach, Kebumen.Keywords:MolluskDiversityIntertidal ZonesCoastal

Research on the diversity of echinoderms at Drini Beach, Gunung Kidul, Yogyakarta has been conducted from December 2020 to July 2021. This study aimed to determine the Echinoderm diversity index. The method sampling technique used belt transect with determination by purposive sampling with three stations in the intertidal zone based on substrate variations. Station 1 had coral substrate type, station 2 had seagrass substrate type, and sand substrate type for station 3. The sample in this study was the species of Echinoderms found in the station area. After sampling, it obtained 7 species of Echinoderms consisting of 3 classes, classified into 4 orders, and 6 families. The diversity index at all stations is low, followed by a low evenness value and a high dominance value. The species Ophiocoma erinaceus was dominant at stations one and two, while the species Tripneustes gratilla was dominant at stations three. Moreover, the most common habitat for echinoderms is This is due to the availability of abundant food, laying places for echinoderms, and shelter to avoid predators. In addition, it is also supported by temperature, pH, salinity, strong currents, and a good depth for Echinoderm habitat

DEVELOPMENT OF MAMALIA MATERIAL POCKET BOOKS IN RAGUNAN PARGARS TO IMPROVE STUDENT'S CONCEPT MASTERAbstract.  This study aims to develop a pocket book in learning biology in order to increase students 'enthusiasm for learning and is an effort to improve students' mastery of concepts. The research was carried out on class X high school students. Data collection was carried out at Ragunan Wildlife Park, Jakarta. The research was carried out in the even semester of the 2019/2020 school year, January to June 2020. The method used in this study was the R&D research and development method using the 4-D (Four D) model, namely Define, Design (Design). , Develop (Development), and Disseminate (Spread). The development of teaching materials is carried out in two stages, namely: Expert Validation and Revision of Learning Media. Based on the results of the study, it can be concluded that the pocket book Mammals of the Primate order which was developed with the define, design, develop stage has met the components that are in accordance with KD in the 2013 curriculum, the language used is easy to understand, the presentation of a pocket book that is full of color and the images shown are very supportive of the material. learning so that it can attract the reader's attention. The Primate Order Mammals pocket book shows valid results and is suitable for use in biology learning. The average value of expert validation from the content / content aspect was 83.5%, the language aspect was 83%, and the presentation aspect was 82.5%.

This research is Research and Development (R&D) model used in the ADDIE model which was done on March until July 2019. The purpose of the study was to develop encyclopedia of macrozoobenthic invertebrates to improve student’s learning outcome. The research was conducted at a High School in Bogor, for the tenth grade students of MIPA 1 as the experimental class with the total number of 37 students and used one group pretest-posttest design. The instruments used in this study consist of expert validation sheets, multiple choice questions and questionnaire sheets to collect student responses about encyclopedia of learning module. Validation data shows that the feasibility test on the content of the material, language and presentations obtain values above 81% included the validity and appropriateness category for learning. The result of the questionnaire shows that a positive response was obtained with values above 82%. The average result obtained at pretest was 43,23 while the average result obtained at posttest was 79,90. The result of the N-Gain analysis shows a medium criterion of 0,6. In conclusion, the encyclopedia of macrozoobenthic invertebrates can improve student learning outcome.

THE INFLUENCE OF LEARNING CARD LEARNING MEDIA ON RESULTS OF THE STUDY OF ANIMAL MOVEMENT SUBTEMAThis research is a type of quantitative research with a quasi experimental approach which consists of pictorial card media as independent variables and learning outcomes as dependent variables. The purpose of this study for to determine whether there is an influence on the learning outcomes of animal motion organ subthemes through the learning media of illustrated cards. This research uses a quasi experimental method. This research was conducted at Karadenan Kaum State Elementary School in Bogor Regency in the class VA and VB Even Semester of the 2019/2020 Academic Year. The analysis technique used is the prerequisite test data analysis which includes data error normality test, homogeneity variance test, then hypothesis testing using t test. Based on the results of data analysis the learning outcomes obtained through the Learning Card Picture Media with an N-Gain value of 74.62. with 100% mastery learning outcomes and without pictorial card learning media obtained an N-Gain score of 62.86 with 75% mastery learning outcomes. The results of hypothesis testing stated H0 was rejected and Ha was accepted because tcount (3.2036)> ttable (1.99346). Based on the results of the above research, it can be concluded that, there is an influence on the learning outcomes of animal motion organ subthemes through the media of learning cards. The most effective learning media on animal motion organ subthemes is the Picture Card Learning media.

The Effect of Teams Games Tournament (TGT) and Student Teams Achievement Divisions (STAD) Teaching Techniques on the Learning Outcome of Natural Science Subject to the students of fifth grade at V SDN Cijujung 03 Kecamatan Bogor. The research employs quasi experimental method and it shows that the average score of the class using TGT gets 7.4% with the N-gain of 1.26 and the class using Student Teams Achievement Divisions gets 5.7% with N-gain of 1.02. The T-tailed score < significance or 0.00<0.05 or Ha is accepted. It can be inferred that there is a significant effect of using TGT and STAD on natural science subject of class 5 at SDN Cijujung 03 in the district of Bogor, the academic year of 2014-2015.