Abstrak Berdasarkan dari pra penelitian yang dilakukan di kelas V SDN Kertomulyo 01 Kabupaten Pati, diketahui bahwa hasil belajar IPS siswa masih tergolong rendah. Hal tersebut dikarenakan media pembelajaran yang ada hanya sebatas media bantuan dari pemerintah seperti peta Indonesia, atlas dan globe. Penggunaan media tersebut tidak memiliki keterkaitan dengan materi pembelajaran IPS “Kedatangan Bangsa Barat di Indonesia”. Penelitian ini bertujuan untuk mengembangkan serta menguji kelayakan dan keefektifan multimedia interaktif adobe flash berbasis budaya pada muatan IPS SDN Kertomulyo 01 Kabupaten Pati. Jenis penelitian ini adalah penelitian pengembangan (R&D). Model Pengembangan yang digunakan adalah model 4D dari Thiagarajan, dkk (dalam Yuniastuti, 2021:80) dengan 4 langkah penelitian yaitu: (1) define; (2) design; (3) development; 4) disseminate. Subjek penelitian dalam uji coba produk kelompok kecil dipilih berdasarkan purposive sampling yaitu 9 siswa dari 30 siswa kelas V SDN Kertomulyo 01. Teknik pengumpulan data yang digunakan adalah tes, wawancara, dokumentasi, dan angket. Hasil penelitian menunjukkan bahwa multimedia interaktif adobe flash berbasis budaya  sangat layak digunakan dengan presentase kelayakan penyajian ahli media sebesar 95%, dan kelayakan isi oleh ahli materi sebesar 88%. Keefektifan penggunaan media ditunjukkan oleh hasil uji perbedaan rata-rata menggunakan uji-t diperoleh hasil sig (2-tailed) = 0,000 maka terdapat perbedaan yang signifikan antara hasil belajar pada data pretest dan posttest. Peningkatan rata-rata (n-gain) hasil pretest dan posttest diperoleh sebesar 0,72 dengan kategori tinggi. Simpulan penelitian ini yaitu multimedia interaktif adobe flash berbasis budaya efektif dan sangat layak digunakan dalam muatan IPS kelas V SDN Kertomulyo 01 Kabupaten Pati. Based on the pre-research conducted in class V SDN Kertomulyo 01 Pati Regency, it is known that students' social studies learning outcomes are still relatively low. This is because the existing learning media are limited to media assistance from the government such as maps of Indonesia, atlases and globes. The use of these media has no connection with the social studies learning material "The Arrival of the West in Indonesia". This study aims to develop and test the feasibility and effectiveness adobe flash on social studies content at SDN Kertomulyo 01 Pati Regency. This type of research is development research (R&D). The development model used is the 4D model from Thiagarajan, et al (in Yuniastuti, 2021:80) with 4 research steps, namely: (1) define; (2) designs; (3) development; 4) disseminate. The research subjects in the small group product trial were selected based on purposive sampling, namely 9 students from 30 students of class V SDN Kertomulyo 01. The data collection techniques used were tests, interviews, documentation, and questionnaires.interactive multimedia adobe flash is culture-based  very feasible to use with a percentage of media expert presentation feasibility of 95%, and content feasibility by material experts of 88%. The effectiveness of the use of media is shown by the results of the average difference test using the t-test. The result is sig (2-tailed) = 0.000, so there is a significant difference between learning outcomes in pretest and posttest. The average increase (n-gain) of the pretest and posttest was obtained by 0.72 in the high category. The conclusion of this research is that interactive multimedia adobe flash based on culture is effective and very suitable for use in social studies class V SDN Kertomulyo 01 Pati Regency.

Increasing market demand for organic rice consumption correlates with increasing organic rice development area. Identifications aim to determine residual content of metals before development conducted and alternatives implemented technology. Survey conducted on a stretch of terraced land in Central Java organic rice development area in Getas Village, Bawang District, Batang Regency. Soil samples were taken in terraced based on irrigation water flow or height place, namely: upper, upper-middle, middle, middle bottom, and lower. Soil samples were taken zigzag in 0-20 and 20-40 cm depth, where each position was taken 8 single points and composite. Soil samples were tested to determine the content of heavy metals Pb, Cd, and Cu. Based on test results, metals are found on each depth. In 0-20 cm depth the soil contains Pb, Cd and Cu respectively of 24.62; 1.70; 25.07 mg/kg, and in 20-40 cm depth containing 25.0 ; 1.72 and 25.96 mg/kg. Critical limits of Pb, Cd, and Cu metals in soils are 100-400; 3,3 and 50-140 mg/kg, respectively. Implemented technology in minimizing metals by adding organic material and biochar to soil and phytoremediation using water plants at the entrance of water.

Introduction: Agricultural land in the Bandung Regency, particularly horticultural land, is contaminated with organochlorine pollutants. This research aimed to determine the extent of organochlorine contamination, acute and carcinogenic health issues, and their spatial distribution. Methods: The study was undertaken by collecting 163 tillage-layer soil samples. The sampling site was determined using the 1.3 x 1.3 km grid method. Using the QuEChERS method, soil samples were extracted, and the residual amounts of endosulfan, dieldrin, and chlordane were determined using GC-MS. Results and Discussion: Endosulfan, dieldrin, and chlordane residual levels in the soil were determined to be 0.00463, 0.00935, 0.01509, 0.02295, and 0.14432, 0.18602 mg/kg, respectively. Acute health risks for adults and children indicate that unfavorable non-cancerous health outcomes are unlikely. For adults, the overall lifetime cancer risk is 12.27% very low risk, 87.12% low risk, and 0.61% moderate risk. The total lifetime cancer risk for children is 8.59% very low risk, 90.18% low risk, and 1.23% moderate risk. Conclusion: The presence of the three organochlorine residues discovered in agricultural soil samples does not threaten human health, but research is still needed on organochlorine residues as a whole.

The agricultural sector is still the leading sector of the economy in Wonosobo Regency. Its superior commodities include paddy rice, tea, tobacco, coffee, and vegetable plants. In the practice of agricultural activities, it is inseparable from the use of inorganic fertilizers and persistent chemical pesticides that cause heavy metal contamination in agricultural land. Industrial waste around agricultural land that enters the water body also contributes to the accumulation of heavy metals in the soil of the water for irrigation. This study aimed to determine the distribution of heavy metal content of Pb, Cd, Ni, Co, Cr, and As on the agricultural land of Wonosobo Regency. The study was conducted on the agricultural land of Wonosobo Regency. As many as 312 soil samples were taken from a layer of sports (depth of 0-20 cm) of agricultural land in ten sub-districts of Wonosobo Regency. Soil sample analysis included heavy metals Pb, Cd, Ni, Co, Cr, As, organic Carbon, CEC, and soil texture. The analysis was carried out in an integrated laboratory, the Agricultural Environment Research Center. The results showed the concentration of heavy metals detected in Wonosobo Regency agricultural land respectively Pb > Co > Ni > Cr > As > Cd. These heavy metals in the soil are still in normal concentrations and are safe for agricultural land.