NATURA: JURNAL ILMU ALAM DAN SOSIAL

The Effect of Power Point-Based Contextual Teaching and Learning (CTL) Strategies on Student Learning Outcomes

Ahmad Zaenal Muttaqin — 2026-02-28

This study aims to describe the effect of PowerPoint-Based Contextual Teaching and Learning (CTL) Strategies on Student Learning Outcomes. This research is an experiment with a one-group pretest-posttest design. The research sample was randomly selected with the subject of class XI IPS MA Darul Hikmah NW Jeruk Manis, Central Lombok, totalling 30 students. The data collection instrument is a multiple choice test which consists of 25 questions that have been tested for validity and reliability. The data were then analyzed through the t-test to determine the effect of CTL on student learning outcomes. The results showed that the average pretest score was 71.5, while the posttest was 78.6. The t-test analysis shows that the Sig. (2-tailed) < 0.05, which is equal to 0.002. These results indicate that the implementation of power point-based CTL learning significantly affects student learning outcomes.

The Impact of Fresh Golden Snail (Pomacea canaliculata) on Gonad Productivity of Sangkuriang Catfish

Ahyar Rasyidi — 2026-02-28

This research aims to investigate the effect of golden apple snail (Pomacea canaliculatae) supplementation on the gonadal productivity of female Sangkuriang catfish. The experiment was conducted in the Wet Laboratory and Basic Laboratory of the Faculty of Fisheries, University 45 Mataram. The study involved the provision of fresh golden apple snail meat as additional feed at varying percentages. Gonadal productivity parameters observed in this research included gonadal maturity index (GMI), egg diameter, gonadal maturity level (GML), and fecundity. The experimental design employed a completely randomized design with four treatments, namely P1 (Pellet 3% + snail 4%), P2 (Pellet 3% + snail 7%), P3 (Pellet 3% + snail 10%), and P4 (Pellet 3%), each with three replications. The results indicated that the supplementation of golden apple snail as additional feed could stimulate the gonadal productivity of female Sangkuriang catfish. The enhanced GML, egg diameter, and GMI values demonstrated that golden apple snail can be utilized as supplementary feed for female Sangkuriang catfish.

Gastropod Diversity in the Lembung Beach Mangrove Ecosystem, Galis District, Pamekasan Regency, Madura

Nurul Istifadah — 2026-02-28

Indonesia is a biodiversity country seen from the amount of biodiversity, including the mangrove ecosystem. Mangrove ecosystems are essential in maintaining ecological balance in forming vegetation structures and becoming a place for marine biota such as gastropods. Gastropods are soft-bodied animals that use their stomachs to walk. In mangrove ecosystems, gastropods have a role in litter decomposition and maintaining nutrient dynamics, so the role of gastropods is essential for mangrove ecosystems. This research was conducted to determine the diversity of gastropods in the mangrove ecosystem of Lembung Beach. This is descriptive exploratory research with a qualitative approach. Sampling and station determination using a purposive sampling technique. Data were analyzed descriptively, tabulated and presented as tables and figures. Based on the research results, there are eight families, namely: Ellobidae Family, Littorinidae Family, Potamididae Family, Muricidae Family, Cerithiidae Family, Neritidae Family, Ampullariidae Family, and Strombidae Family.

Diversity of Gastropod Species on the Coast of the Legend Padelegans Village

Siti Norromlatur Rosyidah — 2026-02-28

Pamekasan is one of the regencies on the island of Madura that has a long coastal area with basic substrates in the form of coral / rocky and sandy, one of which is The Legend Beach. The coastline provides unique characteristics for marine organism life in the intertidal zone. Gastropods are one of seven classes in the phylum Mollusca. Members of gastropods are found in the sea and freshwater, especially in the coastal intertidal zone. The study aimed to identify gastropods found in the intertidal zone of The Legend and classify each species found. This research is exploratory, descriptive research with a qualitative approach. The method in this study is in the form of a roaming method. They are followed by sampling at the research site. The determination of the station on The Legend's coastline taken represents the state of The Legend's coastline as a whole. Samples were taken at three predetermined stations. There are nine species belonging to group 6 families. Namely: Buccinidae, Neritidae, Patellidae, Cerithidae, Littorinidae, and Potamididae.

Identification of Crustacea Class Arthropoda in the Legend Pamekasan Coastal

Soni Iwandani — 2026-02-28

Identification of the Arthropod class of crustaceans is essential to develop strategies for the management and preservation of arthropods in the future because, until now, there has been no data collection on what types of Arthropod class of crustaceans exist in the coastal area of The Legend Pamekasan. This study aims to record the species of arthropod class of crustaceans that exist in the legend beach. Data on arthropod species in the crustacean class were collected using exploratory, descriptive methods. The results of this study indicate that the arthropod class of crustaceans found in the coastal area of The Legend Padelegan Village, Pademawu District, Pamekasan Regency, totalled eight species which were reduced to 4 families. Most of the Arthropod species in the Crutasea class are dominated by the Ocypodidae family, which consists of 3 species. Then from the Sesarmidae and Panopeidae families, which are both number 2 species. In addition, Arthropod species from the Varunidae family were also found, namely one species.