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All Journal PROSIDING SEMINAR NASIONAL Pondasi
Tri Hardono
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Civil Engineering, Building, Construction & Architecture Education Environmental Science Physics Social Sciences Transportation

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DETERMINATION MINING ZONE OF NON-METAL MINERAL AND ROCK BASED ON SEDIMENT INFLOW AND OUTFLOW IN THE BODRI RIVER KENDAL REGENCY Reynold Bagus Riyanto; Tri Hardono; Ari Sentani
Pondasi Vol 23, No 2 (2018): Desember 2018
Publisher : UNISSULA Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/pondasi.v23i2.11210

Abstract

ABSTRACTLocal traditional mining in the Bodri River Kendal regency increasingly concerned, this is of course if left unchecked will damage the river body, river channel, causing landslides, can even disrupt the stability of water buildings such as weirs and bridges. The purpose of this research is as an effort to Determine Non-Metal and Rock Mineral Mining Zonation Based on the Inflow and Outflow of Sediment in Bodri River of Kendal Regency, to obtain the areas which are allowed to be mined and the mining volume. This research is descriptive qualitative by doing direct observation, interview and documentation. Descriptive method is a method used to examine the status of human groups, an object, a condition and a system of thought and events that will occur. The purpose of this study is to create an explorative, systematics, factual and accurate facts on the specific case. The research results are sediment inflow to  the Bodri river is 103.327,40 ton/year, whereas the outflow is 379.459.46 ton/year, which mean the river morphology has serious problem caused by the mining activity. Keywords: Zoning, Mining, Non-Metal Material and Rocks, Sediment
Improving Student's Management Ability with Developed Halma Media Tri Hardono; - Suad; Sri Utaminingsih
PROSIDING SEMINAR NASIONAL & INTERNASIONAL 2021: Proceeding The 12th International Conference On Lesson Study (ICLS-XII)
Publisher : Universitas Muhammadiyah Semarang

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Abstract

Abstract. The purpose of this study was to develop learning media for the halma game to improve the ability to count multiples of a number for grade 4 SD in Demak Regency. This research method is Research and development. There are 3 stages in this research: the preliminary study stage, the development stage, media validation, and field testing, as well as the dissemination and socialization stage. The results of this study are in the form of manual learning media products in the form of multiples number board games from paper and MMT, and digital, in the form of digital in the form of a game application using articulate storyline 3. Validation from media experts and material experts gave assessments, validators I, II, III, and IV respectively 36, 35, 37, and 36 from a maximum score of 40. The media developed was categorized as very good. The results of the control class posttest t test and the experiment shows the value of t = -336 with a Sig. (2-tailed) value of 0.664> α = 0.05, so that the media developed is valid.Keywords: Checkers game, multiples of numbers
Co-Authors - Suad Ari Sentani Reynold Bagus Riyanto Sri Utaminingsih