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A Case Study on Changes in Preservice Teachers’ Perceptions of ICT through Inquiry-Based Lessons in Teacher Education
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A Study on the Reasoning Involved in Connecting and Reconstructing Concepts During the Construction of ER in the Life Domain of High School: A Case Study of “Human Homeostasis” in Basic Biology
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Effects of Oyster Shells on Small-Scale Aquaponics Systems
Get PDF持続可能な社会の実現に向けて，循環型食料生産を教育に取り入れる試みが注目されている．中でも，水産養殖と水耕栽培を組み合わせた循環型生産システムであるアクアポニックスは，技術科教育においても教材として提案されており，ESD教材としての可能性を有している．アクアポニックス教材を個人（もしくは少人数の班）で取り扱うことで，個別最適な学びの実現に繋がるものと考えられるが，そのためには小型システムでの運用が必須となる．しかしながら，小型システムでは水質が不安定になりやすいといった課題を抱えている．本研究では，アクアポニックスの教材化実現に向け，小型システムにおける水質の安定化を主目的としている．本報では基礎実験として，牡蠣殻の効果について検証した結果について報告する．メダカとブロッコリースプラウトを用いて実験を行った結果，牡蠣殻はpHの変動を緩和するものの，顕著な効果は認められなかった．しかしながら，ブロッコリースプラウトの育成には効果があり，温度や照明の管理を行わなくとも高発芽率を維持できることや，ブロッコリースプラウトの生育に寄与することが確認された．In the pursuit of a sustainable society, increasing attention has been given to incorporating circular food production systems into education. Among these, aquaponics—an integrated system combining aquaculture and hydroponics—has been proposed as an instructional tool in technology education and holds potential as a resource for Education for Sustainable Development (ESD). Allowing students to work with aquaponics systems individually or in small groups may contribute to personalized learning; however, this requires compact systems. A major challenge of such small-scale systems is their tendency toward unstable water quality. The present study primarily aimed to stabilize water quality in compact aquaponics systems to support their use as educational tools. As a fundamental experiment, we investigated the effects of oyster shells. Experiments using medaka (Oryzias latipes) and broccoli sprouts demonstrated that oyster shells mitigated fluctuations in pH, although their effects were limited. Nonetheless, beneficial effects were observed in broccoli sprout cultivation, including the maintenance of a high germination rate and improved growth, even without active control of temperature and lighting
Multi-color luminescent crystals derived from dynamic diastereomers of a perylene-substituted binaphthol derivative
Get PDFHerein, we demonstrate a novel strategy for obtaining multi-color luminescent crystals. A perylene-substituted (S)-binaphthol derivative was designed, exhibiting dynamic conversion of diastereomers in solution. Crystallization of the dynamic mixture yielded three crystals with different emission colors, each having a different composition of diastereomers and solvent molecules