This research aims to see the effect of joyful mathematics learning on number sense and motivation of class II students at SD Negeri 108 Pekanbaru. This type of research is an experiment with a quantitative approach and uses a quasi-experiment method. The design in this research is Nonequivalent Control Group Design, which uses two classes, namely the control class and the experimental class wh…
Instilling character values in Arts, Culture and Crafts (SBdP) learning has an important role in shaping students' personalities from an early age. One form of implementation of character values in learning is through traditional arts, such as the Zapin Meskom Bengkalis Dance. This study aims to describe the movements of the Zapin Meskom Bengkalis Dance and the implementation of this dance in S…
The relationship between factors causing successful basketball shooting, this study discusses the factors of hand-eye coordination and concentration on the accuracy of basketball shooting at MAN 1 Kuantan Singingi based on the phenomenon found in extracurricular basketball students in shooting there are still shots that deviate from the ring box line or are not on target, this shows that when s…
This study identifies the problems that arise in bulu tangkis extracurricular students at SMA Negeri 1 Kuantan Hilir, extracurricular activities at the school are quite active because they have a fixed training schedule, but in the identification and observation, deficiencies were found in performing forhand smashes as it is known that bulu tangkis is a rally system sport, meaning that students…
The increasing interest in athletic bodies has encouraged many people to do weight training, one of which is through the Single Pyramide method. This study aims to analyze the effect of weight training with the Single Pyramide method on increasing muscle mass of Focus Fit Fitness Pekanbaru members. In this study, an experimental method was used with a one-group pre-test post-test design. T…
Physics is one of the fields of study in the curriculum, physics is important to be taught in formal schools because it is closely related to natural phenomena that are useful for solving problems in everyday life. Physics is knowledge science Which in essence oriented on symptom nature and emphasizes the aspects of the process, products, and attitudes of science. So far physics has often consi…
Stunting is one of the nutritional issues in Indonesia caused by chronic malnutrition, particularly during the first 1,000 days of life. The stunting reduction achievement in Rokan Hilir for 2024 is 29.7%, which is still far from the national target of 14% by 2024. One of the factors contributing to stunting is low knowledge levels. Enhancing the understanding of prospective parents, especially…
This research was conducted from May to July 2024 at the Faculty of Fisheries and Marine Sciences, Riau University, Pekanbaru. The purpose of this study was to determine the best dose of ketapang leaf powder (Terminalia catappa) on water chemistry parameters in the growth medium of baung fish fry (Hemibagrus nemurus). The research method used a one-factor Completely Randomized Design with 4 lev…
This study aimed to analyze the total oil content in water and sediment and to assess the relationship between the two in the coastal waters of Lalang Village, Medang Deras Subdistrict, Batubara Regency. Samples were collected from three stations representing a tourist area, a river estuary, and an industrial area. The Gravimetri method (API 1340) was used for water, while the Soxhlet method wa…
One of the economically valuable walking catfish species in Indonesia is Clarias batrachus. Due to high exploitation, this species may be at risk, making cultivation necessary. One of the key aspects of cultivation is the success of spawning. One of the applications of spawning is the use of hormones, and hCG is a hormone commonly used in fish spawning. This study aimed to determine the best do…
The clouded leopard (Neofelis diardi) population is currently in a very alarming and endangered condition. This study aims to determine the population structure of clouded leopards in the Bukit Tigapuluh. The research was conducted from November 2024 to January 2025 at Pt Alam Bukit Tigapuluh in 4 different phases, namely phase 1 in October 2020-January 2021, phase 2 in July 2021-November 2021,…
Quality feed is one factor affecting the growth and survival of Asian redtail catfish (Hemibagrus nemurus) larvae. Fish oil from pangasius catfish mesenteric fat waste can be commercial feed enrichment material. However, the high-fat content makes fish oil susceptible to oxidation. BHT emerged as an antioxidant added to fish feed to limit pangasius catfish oil autoxidation. This study aimed to …
Ikan bawal air tawar (Colossoma macropomum) merupakan komoditas perikanan air tawar yang bernilai ekonomis tinggi, namun kualitas air dalam budidaya sering menjadi kendala. Pemanfaatan biofilter alami seperti kijing Taiwan (Anodonta woodiana) dalam sistem polikultur diharapkan dapat memperbaiki kualitas air dan meningkatkan performa pertumbuhan ikan. Penelitian ini bertujuan untuk mengevaluasi …
Giant gourami (Osphronemus gouramy) has a high economic value and market demand. However, its seed production is often hampered due to slow growth. Farmers still depend on tubifex as initial feed, but their availability is limited and relatively expensive. Commercial feed fermented using EM4 probiotics is expected to be an alternative to tubifex. This study aims to determine the effect and best…
Walking Catfish (Clarias batrachus) is one type of freshwater fish that has the potential to be developed. Efforts to increase production are through intensive cultivation through increased stocking density. Growth is also influenced by the density of fish stocked, where with a low stocking density, fish growth is relatively faster and vice versa at high stocking densities fish growth is relati…
Trichogaster trichopterus is one of freshwater fishes that has highly favored by consumers for its delicious taste and nutritional content. This study was conducted from September 2024 to March 2025 at the Parasitology and Fish Diseases Laboratory, Faculty of Fisheries and Marine Sciences, University of Riau. The study aimed to examine the erythrocyte profile infected by the digenean trematode …
Trichogaster trichopterus is a freshwater fish commonly found in swampy and lowland waters, and it is highly valued for its taste and economic potential. However, in its natural habitat as well as in aquaculture systems, this species is often exposed to various environmental stressors that increase its susceptibility to parasitic infections. This research was conducted from September 2024 to Ma…
Coral reefs play a crucial role in maintaining the stability of marine ecosystems. Healthy coral growth is often indicated by the presence of symbiotic zooxanthellae within the coral tissue. The density of zooxanthellae varies and is influenced by several factors. Depth affects these limiting factors—such as light intensity, temperature, and ocean acidity—which in turn impacts zooxanthellae…
Microplastic pollution in the marine environment has become a critical environmental issue that requires a biological remediation approach. The coastal waters of Bagansiapiapi, Riau Province, are an important fishery area potentially affected by microplastic contamination. This study aims to isolate and identify microplastic-degrading bacteria from sediments in the waters of Bagansiapiapi, Riau…
The Siak River experienced lead (Pb) heavy metal pollution in January 2024 ranging from 0.072 - 0.113 mg/L. Very high Pb levels affect the structure of fish organs, especially the kidneys. This study aims to determine the Pb levels in the waters of the Siak River and changes in the macroscopic and microscopic structure of the kidney organs of the catfish Hemibagrus nemurus (Valenciennes, 1840).…