PENGARUH MODEL PEMBELAJARAN KOOPERATIF SFAE (STUDENT FACILITATOR AND EXPLAINING) TERHADAP PEMAHAMAN KONSEP MATEMATIS DAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIS PADA POKOK BAHASAN SEGIEMPAT PESERTA DIDIK KELAS VII MTS MAMBAUL FALAH TAHUN AJARAN 2019/2020

AbstrakPenelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran kooperatif SFAE (Student Facilitator and Explaining) terhadap kemampuan memahami konsep matematis, untuk dan mengetahui pengaruh model pembelajaran kooperatif SFAE (Student Facilitator and Explaining) terhadap kemampuan pemecahan masalah matematis pada pokok bahasan segiempat peserta didik kelas VII MTs Mambaul Falah Tambilung Tambak Bawean Gresik Tahun Ajaran 2019/2020. Penelitian ini menggunakan pendekatan kuantitatif dengan jenis rancangan true experimental design. Hasil penelitian menunjukkan bahwa (1) Hasil uji-t dua pihak berbantuan Software SPSS 23 diperoleh nilai Sig 2-tailed  untuk pemahaman konsep matematis dan Sig 2-tailed  untuk pemecahan masalah matematis maka  ditolak yang berarti ada perbedaan model pembelajaran SFAE (Student Facilitator and Explaining) baik pada pemahaman konsep matematis maupun pemecahan masalah matematis peserta didik pada materi segiempat sekolah MTs Mambaul Falah kelas VII daripada kelas kontrol yang menggunakan model pembelajaran konvensional. (2) Hasil uji-t satu pihak didapat didapat =  untuk pemahaman konsep matematis peserta didik dan =  untuk kemampuan pemecahan masalah matematis peserta didik dimana kedua nilai > 0,95 ( ≥ 1−), 0 ditolak yang artinya kelas eksperimen yang menggunakan model pembelajaran SFAE (Student Facilitator and Explaining) lebih baik daripada kelas kontrol yang menggunakan model pembelajaran konvensional. Kata kunci: Kemampuan memahami konsep matematis, kemampuan pemecahan masalah matematis, model pembelajaran kooperatif SFAE (Student Facilitator and Explaining).

DIVERSITY OF MYCORRHIZAL FUNGI IN THE RHIZOSPHERE OF Avicennia officinalis (L.) IN THE PENITI MANGROVE FOREST, MEMPAWAH REGENCY

Mycorrhizal fungi are a form of mutualistic symbiosis between fungi and plant roots, including mangrove api-api that grows on mangrove area. This study aims to determine the diversity of mycorrhizal fungi on mangrove api-api (Avicennia officinalis L.) This study used a combination of wet filtering and centrifugation techniques for spore isolation. The results showed that the types of mycorrhizal fungi found in mangrove area were Scutellospora, Gigaspora, Acaulospora Glomus sp1, Glomus sp2, Glomus sp3 and Glomus sp4.  The diversity of mycorrhizal fungi in Peniti area was 0,07105 and Sungai Purun was 0,47280. the distribution of species is uneven, there are species that dominate and conditions are unstable. Spore density of 103 spores /100 gr soil and level of root infection percentage with low class (class 1) was 0,24% in Peniti dan 0,18 % in Purun River

Growth of Pepper Plant (Piper nigrum Linn.) After Application of Organic Fertilizer Leaves of Gamal (Gliricidia sepium (Jacq) Kunth.)

Pepper (Piper nigrum Linn.) is the most traded spice commodity among other spices.  The problem with pepper farming in West Kalimantan is the lack of nutrient availability because plantation land is dominated by ultisol soils. Gamal leaf liquid organic diapers application is expected to increase the availability of nutrients in the growing media.  The aim of the study was to determine the nutrient content of the liquid organic diapers of gamal leaves, to see the effect, as well as the best concentration and time of application on the vegetative growth of pepper plants. The study was carried out for four months, namely from January to April 2020 at the Pepper Plantation of Tengon Village, using a factorial compeletely randomized design pattern consisting of 2 factors, the concentration such as 10%, 20%, 30%, 40% control and liquid organic fertilizer application time (every time week and every two weeks).  The results showed that liquid organic fertilizer of gamal leaves contained 12.7% C-organic., 0.27% N-Total., 47.03 C/N ratio., 0,25% P., and 0,29 K. The results of the research that giving Gamal leaf liquid organic fertilizer had a significant effect on shoot length, number of shoots and number of leaves of pepper plants, however, it did not significantly affect the time of emergence of pepper shoots. Liquid organic fertilizer concentration of 40% and time of application every week gave the best effect on shoot length (25.33 cm), number of shoots (4.33 shoots), and number of leaves (14.33 strands).  It was concluded that the  liquid organic diapers concentration treatment of gamal leaves had a significant effect on shoot length, number of shoots, and number of leaves of pepper plants but did not significantly affect the time of shoots emerging for pepper plants.  The best poc concentration that increases pepper plant growth is 40% with every week application.  It is recommended that further research can be carried out on the manufacture of  liquid organic diapers of gamal leaves combined with animal waste on the growth of pepper plants, with application time of 2-3 times in one week

Application of Legume Inoculum (Legin) to The Root Nodules and Peanut (Arachis hypogaea L.) Production on Peat Soil West Kalimantan

Peanuts (Arachis hypogaea L.) are food crops that have high economic value because of their nutritional content. One of the factors that affect the low production of peanuts in West Kalimantan is the condition of the soil dominated by peat soil causing soil fertility to be low. Application of Rhizobium or legin is expected to increase the production of peanuts (Arachis hypogaea L.). The purpose of the research was to find out the effect of legin application against the amount of root nodules and the production of peanut plants. The research was conducted from November 2020 to February 2021. This research used a Completely Randomized Design (CRD) consisting of 5 treatments namely control, application of legin 4 g/kg seed, 8 g/kg seed, 12 g/kg seed and 16 g/kg seed. The results showed application of legin has a real influence on the total weight of root nodules, the total number of root nodules, the number of effective root nodules, the number of filling pods, the number of seeds and the weight of seeds, but had no noticeable effect on the time of flowering. Legin application of 12 grams / kg of seeds is the best concentration to increase the production of peanuts grown in west Kalimantan peat soil, because it gives the best results to the number of pods content 11.33 pods, the number of seeds 24.16 seeds and the seed weight 19.73 grams

Vegetative Growth of Paprika Plant (Capsicum annum var grossum) at Three Diferent Sound Frequencies

Paprika (Capsicum annum var grossum) is a horticultural commodity with high economic value. Cultivation of paprika is currently still relatively low, for West Kalimantan. This research was conducted to see the effect of exposure to different sound frequencies on the growth of Paprika (Capsicum annum var. grossum) plants.  The time for the study was from May 16 2022 to August 14 2022. This study used a Completely Randomized Design (CRD) which had 4 different treatments namely control, 396 hz sound exposure, 528 hz sound exposure, and 660 hz sound exposure. Data were analyzed using one way ANOVA followed by Duncan's test with a certainty level of 0.05%. The results showed that exposure to 528 sound gave the best results on plant height, leaf area, pore length, pore width, chlorophyll B, and total chlorophyll. In conclusion, that exposure to sound can increase the growth of pepper plants

Ethnobotany of Medicinal Plants from the Malay People in Tanjung Village, Bunguran District, Northeastern District of Natuna Regency

The use of plants in traditional medicine has been used out by people in the Kepulauan Riau. However, knowledge about the use of plants in traditional medicine by the Malay people in Tanjung Village, Northeast Bunguran District, Natuna Regency, has never been documented. The aim of this study is to identify the species of plants and plant parts that are used, to learn how to prepare and use medicinal plants, and to evaluate the importance of citation frequency and informant agreement elements in Tanjung village’s traditional medicine. The research was carried out by conducting semi-structured interviews, and continued with a discussion of 13 respondents who were determined by snowball sampling. The data collected includes: the plant species and families, the component used, the processing method, the usage method, and useg. Also, the informant agreement factor and the frequency of citations/mentions of each medicinal plant (%) were determined. The results showed that the people in Tanjung Village used 72 species of plants in traditional medicine. Fabaceae and Zingiberaceae are the dominant plant families reported by respondents as medicinal plants. Generally, the people in Tanjung Village use more of the leaves (46.67%) for use as medicine, the processing method is by boiling (33.3%) and the method of use is by drinking it (58.2%)

Kandungan Kadmium (Cd) dalam Kerang Darah (Anadara granosa) dan Sedimen Asal Perairan Pulau Sedanau Kabupaten Natuna

Pengelolaan sumber daya pesisir yang tidak berbasis lingkungan dapat menyebabkan terjadinya penurunan kualitas lingkungan pesisir, seperti masuknya cemaran zat organik ataupun zat anorganik ke dalam badan perairan. Salah satu bentuk cemaran yang sangat berpotensi hadir dalam lingkungan perairan laut adalah logam berat seperti Kadmium (Cd) sebagai akibat dari aktivitas manusia di dekat wilayah pesisir. Keberadaan logam ini sangat berpotensi  membahayakan biota laut seperti kerang-kerangan, kepiting, udang yang hidupnya di daerah pesisir. Penelitian ini bertujuan untuk menentukan kandungan logam Cd dalam daging kerang darah (Anadara granosa) dan sedimen pada habitat kerangnya serta kelayakannya untuk dikonsumsi berdasarkan nilai ambang batas cemaran Cd yang disyaratkan. Pengambilan sampel dilaksanakan pada bulan Juni 2020 menggunakan 2 stasiun (titik sampling), menggunakan metode purposive sampling yaitu berdasarkan jarak dari pusat aktivitas. Analisis cemaran logam berat Cd dilakukan dengan menggunakan spektrofotometer serapan atom. Hasil pengukuran menunjukkan bahwa kandungan Cd dalam daging kerang A. granosa dan sedimen pada perairan pulau Sedanau pada kedua stasiun pengambilan sampel bernilai rata-rata 1,1123 mg/kg dan 1,4551 mg/kg di statsiun 1 serta 0,0781 mg/kg dan 1.4223 mg/kg, yang masih berada di bawah ambang batas yang disyaratkan Standar Nasional Indonesia (SNI) No. 7387 tahun 2009 yaitu sebesar 1,5 mg/kg.Pengelolaan sumber daya pesisir yang tidak berbasis lingkungan dapat menyebabkan terjadinya penurunan kualitas lingkungan pesisir, seperti masuknya cemaran zat organik ataupun zat anorganik ke dalam badan perairan. Salah satu bentuk cemaran yang sangat berpotensi hadir dalam lingkungan perairan laut adalah logam berat seperti Kadmium (Cd) sebagai akibat dari aktivitas manusia di dekat wilayah pesisir. Keberadaan logam ini sangat berpotensi  membahayakan biota laut seperti kerang-kerangan, kepiting, udang yang hidupnya di daerah pesisir. Penelitian ini bertujuan untuk menentukan kandungan logam Cd dalam daging kerang darah (Anadara granosa) dan sedimen pada habitat kerangnya serta kelayakannya untuk dikonsumsi berdasarkan nilai ambang batas cemaran Cd yang disyaratkan. Pengambilan sampel dilaksanakan pada bulan Juni 2020 menggunakan 2 stasiun (titik sampling), menggunakan metode purposive sampling yaitu berdasarkan jarak dari pusat aktivitas. Analisis cemaran logam berat Cd dilakukan dengan menggunakan spektrofotometer serapan atom. Hasil pengukuran menunjukkan bahwa kandungan Cd dalam daging kerang A. granosa dan sedimen pada perairan pulau Sedanau pada kedua stasiun pengambilan sampel bernilai rata-rata 1,1123 mg/kg dan 1,4551 mg/kg di statsiun 1 serta 0,0781 mg/kg dan 1.4223 mg/kg, yang masih berada di bawah ambang batas yang disyaratkan Standar Nasional Indonesia (SNI) No. 7387 tahun 2009 yaitu sebesar 1,5 mg/kg

Inventory of Orchid Species in Customary Forest Area of Cipta Karya Village, Sungai Betung District, Bengkayang Regency

Orchids are one of the flowering plants that have many species and are widely distributed, as well as having different attractions and characteristics in each species and habitat. The aim of this research to inventory the types of orchids in Customary Forest Area of Cipta Karya Village, Bengkayang Regency. The research was conducted using the cruise method. The characteristics observed were the morphology of orchids such as roots, pseudobulbs, stems, leaves, and flowers. The inventory results found 13 species of orchids. Epiphytic orchids were found more commonly in this area, with a total of  9 species, while terrestrial orchids were found with 4 species. The epiphytic orchid species foundware composed of Appendicula sp., Bulbophyllum sp., Coelogyne speciosa, Cymbidium sp., Dendrobium crumenatum, Dendrobium anosmum, Luisia sp., Micropera pallida and Oberonia sp. The terrestrial orchid species found ware composed of Acanthephippium javanicum, Malaxis latifolia, Nephelaphyllum pulchrum, and Spathoglottis plicata

PERTUMBUHAN BIJI KAKAO (Theobroma cacao L.) DENGAN PERENDAMAN DALAM BAWANG MERAH (Allium cepa L.) DAN LARUTAN GIBERELIN (GA3)

Cocoa beans (Theobroma cacao L.) are recalcitrant beans. Soaking cocoa beans in a solution containing growth regulators will accelerate the softening of the seed coat so that water from the solution will enter the beans imbibitably and accelerate the growth of the beans. The purpose of this study was to determine the effect of soaking onion extract (Allium cepa L.) and gibberellin (GA3) solution. on the growth of cocoa beans (T. cacao L). This study used a completely randomized design (CRD) with different concentrations of onion extract (B) and gibberellins (G) consisting of a combination of 0 ppm onion extract and 0 ppm GA3, a combination of 100 ppm red onion extract and 0 ppm GA3 extract, and a combination of 100 ppm red onion extract and 0 ppm GA3 extract. onion 0 ppm and GA3 100 ppm, a combination of onion extract 100 ppm and GA3 100 ppm, a combination of onion extract 100 ppm and GA3 200 ppm, a combination of onion extract 200 ppm and GA3 100 ppm treatment with 4 replications to obtain 24 experimental units. The results showed that soaking cocoa beans using a combination of onion extract and gibberellins resulted in 100% germination percentage and significantly affected plant height, wet weight and dry weight but had no significant effect on leaf number. The combination treatment of 100 ppm red onion extract and 100 ppm GA3 resulted in the highest plant height, wet weight and dry weight with values of 34.52 cm, 9.26 grams, and 6.20 g, respectively