Literacy and numeracy skills are cognitive learning outcomes measured in the Minimum Competency Assessment (AKM) and are part of the National Assessment (AN). This study aims to describe the literacy and numeracy achievement profile of junior high school students in terms of three aspects, namely content, cognitive processes, and context The descriptive quantitative approach method used in this research involved 141 class VIII junior high school students in North Aceh Regency and Lhokseumawe City through random sampling. Respondents are participants who took part in the 2021 National Assessment. The research instrument used was a question on literacy with 26 questions and numeracy with as many as 30 questions according to the grid and aspects of the AN that had been validated. The context of the questions is arranged in the form of personal, socio-cultural, and scientific. The distribution of the questions is in the form of 20% multiple-choice, 60% complex multiple-choice, 10% matching, 5% short answer or short answer, and 5% description. The results showedthe average percentage score of literacy ability was 43.87% with low criteria, meanwhile for numeracy skills, the average percentage score was 33.91% with very low criteria. These results indicate that students' literacy and numeracy skills in terms of each content need to be improved through the implementation of learning programs and the use of textbooks that lead to the improvement and development of literacy and numeracy skills.

The matoa plant (Pometia pinnata) is known as a medicinal plant that has high antioxidant activity. Cigarette smoke produces free radicals and causes oxidative stress, a condition where the number of free radicals in the body exceeds the capacity to neutralize them. The aim of this study was to evaluate the levels of malondialdehyde (MDA), superoxide dismutase (SOD) and histopathological features of rat’s lung exposed to cigarette smoke and matoa peels extract. The research method uses laboratory experimental studies using rats as research subjects. The design used was Randomized Posttest Only with Control Group Design. 24 male white rats of the wistar strain were divided into 6 groups: normal, negative control, positive control, and group I, II, III were given matoa peels extract 3, 6, and 12 mg/kgBW respectively and exposure to cigarette smoke for 14 days. After 14 days, MDA, SOD and histopathological picture of the rats' lungs will be compared based on the group. Data analysis was carried out using a one-way ANOVA test. The results showed that matoa peels extract could reduce MDA levels and increase SOD activity in rats exposed to cigarette smoke (p value <0.05). Group that is given matoa peels extract 12 mg/kgBW can reduce lung tissue damage.

Heavy metals are frequently employed in a variety of industries, including industry, agriculture, food processing, and domestic appliances. Heavy metal concentrations will be extremely high in locations with residential, mining, and manufacturing activity. The concentration of heavy metals in fish reflects the state of heavy metal pollution in the ecosystem. Heavy metal accumulation in aquatic creatures' organs can occasionally exceed the level of heavy metals in their environment. The purpose of this literature review is to give information on the bioaccumulation of heavy metals in fish in Indonesian seas. 38 fish species were recorded, and literacy parameters in the form of sample locations and levels, units and types of heavy metals discovered were summarized. Pb > Cd > Hg > Cu > As > Zn > Cr > Mn > Fe is the order of metal abundance discovered. It is advised that heavy metal contamination studies be carried out in the future as part of the government's strategy for tracking down this problem.

Molasses fermentation from molasses has been studied as an alternative to renewable energy. The goal of this research was to determine molasses fermentation as an alternative to renewable energy. The goal of this research was to monitor the alcohol concentration and pH levels during the fermentation process. This study employed a completely randomized design (CRD) method with two components. Factor A is the amount of time required for aeration. Molasses dilution is factor B. Factor A was tested across four different time periods: 24, 48, 72, and 96 hours. Factor B was tested using three different ratios: 1: 1.5, 1: 2, and 1: 2.5. The calculations of alcohol content FcalcP = 74.35> Ftable (11; 36; 0.05) = 2.07 and Ftable (11; 36; 0.01) = 2.79 revealed that components A and B had a significant impact on the final alcohol content. The BNJ 1% was calculated to be 0.63. This demonstrates that A4B3 is the most effective treatment. FcalcP = 2.85> Ftable (11; 36; 0.05) = 2.07 and Ftable (11; 36; 0.01) = 2.79, indicating that factors A and B have a highly substantial effect on acidity (pH). The BNJ 5% was obtained at a value of 0.61. This also demonstrates the optimal acidity conditions in A4B3 therapy. Based on these findings, it is clear that aeration for 96 hours and dilution with a 1: 2.5 ratio produce the greatest outcomes and the maximum alcohol content. At a pH of 4.45, the average bioethanol content is 6.31%.

This study is inspired by the lack of supporting learning tools in stoichiometry lectures, which causes students to struggle with the concept of the quantity of reactants and products involved in theoretical reactions and chemical calculations as a whole. To strengthen their comprehension of stoichiometric ideas at the macroscopic, submicroscopic, and symbolic levels, students require additional learning resources. The purpose of this research is to create modules based on numerous representations, exposing the amount of validity and practicability of modules as a source of student learning in stoichiometry courses. The research approach employed is R&D using the Dick & Carey development model through the steps of needs analysis, product design, validation, and evaluation. The study included two expert validators and 35 students from the Chemistry Education Study Program at UIN Ar-Raniry. Validity and practicality questionnaires were used to acquire research data. Based on the expert team's assessment, the learning module fulfilled the very valid criteria with an average assessment score of 95.17%. With a practicality score of 94.17% based on student responses, the learning module passes the criterion of being very practical. As a result, the multi-representation-based learning module may be inferred to be very valid and very practical for usage as a supporting learning resource for students in more optimal stoichiometry lectures.

Zeolitic Imidazole Framework-8 (ZIF-8) has been synthesized by dissolving Zn(NO3)2.4H2O and 2-MeIM into a methanol solvent and solvothermal method. The synthesized ZIF-8 will be applied as a cadmium (Cd) adsorbent in Polluted water. Several characterization methods were conducted, including XRD, FTIR, and AAS. The XRD analysis shows that the prominent characteristic peaks of ZIF-8 at an angle of 2θ = 7,25o; 10,26o; 12,57o; 16,22o; and 17,86o. At the same time, the FTIR analysis showed the presence of functional groups of Zn-N, C-N, C=N, C=C, and C-H on aromatic 2-Methyl Immidazole as an indication that ZIF-8 has been completely established. Based on the result, the AAS method performed to analyze ZIF-8 ability to adsorb Cd in the water showed that Cd ions adsorption increased at pH 6 and 8 while decreasing at pH 7.

To further improve achievement of the given learning objectives, chemistry learning requires instructional materials that encourage active engagement of students. The goal of this research was to create student worksheets based on Peer Led Team Learning (PLTL) on colloid material, to establish the validity of student worksheets based on PLTL on colloid material, and assess teacher and student responses to worksheets. PLTL based students on colloid material that has been developed. This research approach is known as research and development (R&D), and it is carried out utilizing the 4D model (define, design, develop, and disseminate). Purposive sampling was used for the sample technique. The study was carried out at four schools: MAN 3, SMAN 5, SMAN 12, and SMAN 15 Adidarma Banda Aceh. Validating the practicality of student worksheets and questionnaire responses from teachers and students were used to obtain data. This study obtained the following results: (1) validation of the feasibility of student worksheets by expert validators of 92.3% and based on the chemistry teacher's assessment of 86.5% in the very good or valid category; (2) results of the teacher's responses to the students' worksheets obtained a percentage of 88.1% in the very good category; and (3) results of the students'responses to the students' worksheets obtained a percentage of 79.9% in the good category. Based on the findings, it is possible to infer that the student worksheet based on PLTL on colloid material is appropriate for use as teaching material on colloid material.

The purpose of this study is to define the characteristics of STEM-based LKPD, as well as to establish the practicality of STEM-based LKPD and the growth in students' creative thinking abilities. The literature study approach was employed in this study, which was gathered from various sources such as books, journals, and articles linked to the observed research. Determine the topic, obtain information, determine research, collect data sources, prepare data presentation, and compile are the steps in this research. The findings of this research analysis in the three journals studied are visible, specifically the comparison of the development of STEM-based worksheets in improving creative thinking skills to obtain results that are very feasible to develop when compared to the development of critical thinking and scientific literacy. This is demonstrated by the 85.21% improvement in creative thinking skills acquired from STEM-based LKPD development research. Furthermore, based on the analysis of literature studies on the growth of STEM-based LKPD in enhancing creative thinking skills, it has improved year after year, with the feasibility percentage reaching 96% in 2022.

Akar nipah (Nypa fruticans Wurmb) contains active chemicals in the form of flavonoids and is a component of the nipah plant with antioxidant activity. The study's goal was to determine the total flavonoid content as well as the antioxidant activity of akar nipah extract. The extraction method is a maceration method with methanol as the solvent. Total flavonoid levels in akar nipah extract were determined using UV-Vis spectrophotometry after the addition of 10% AlCl3 at a wavelength of 433 nm, while antioxidant activity was determined using the DPPH (2,2diphenyl-1-picrylhydrazyl) technique at a wavelength of 516 nm. The total flavonoid levels and antioxidant activity were determined in comparison to quercetin. According to the study's findings, akar nipah extract contains flavonoids at 0.05 0.01% and has very strong antioxidant activity (IC50 of 6.59 ppm).