Working in a Team: Development of a Device for Water Hardness Sensing Based on an Arduino-Nanoparticle System

Autor/inn/en	Zarantonello, Federico; Mancin, Fabrizio; Bonomi, Renato
Titel	Working in a Team: Development of a Device for Water Hardness Sensing Based on an Arduino-Nanoparticle System
Quelle	In: Journal of Chemical Education, 97 (2020) 7, S.2025-2032 (8 Seiten)Infoseite zur Zeitschrift PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Zarantonello, Federico) ORCID (Mancin, Fabrizio) ORCID (Bonomi, Renato)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0021-9584
DOI	10.1021/acs.jchemed.9b01156
Schlagwörter	Water; Secondary School Science; Computer Uses in Education; Measurement Equipment; Science Instruction; Student Projects; Active Learning; Chemistry; Teamwork; Foreign Countries; High School Students; Group Activities; Italy + Suchen Sie Ihr Suchwort? Wasser; Computernutzung; Messinstrument; Teaching of science; Science education; Natural sciences Lessons; Naturwissenschaftlicher Unterricht; Schulprojekt; Aktives Lernen; Chemie; Ausland; High school; High schools; Student; Students; Oberschule; Schüler; Schülerin; Studentin; Gruppenaktivität; Italien
Abstract	This work describes a two-year project carried out in an Italian technical high school. Through integrated work, the activity involved the efforts of different teachers and students, particularly those in the Chemical, Electronic, and IT departments. They merged their complementary skills to create an inexpensive device that quickly measures water hardness. The pedagogical aspect of this work aimed to support and reinforce development of the key competences for lifelong learning recommended by the European Commission, especially by strengthening the logical-mathematical, digital, and social skills of the students. The device made is based on an Arduino board connected to a red LED and an optical sensor. The device is able to read the intensity of light transmitted through the sample and to independently convert this output into the water hardness expressed in French degrees. The color change used as information transducer is due to the aggregation of negative gold nanoparticles induced by the bivalent cations in solution. Working in school laboratories under teacher supervision, students connected and troubleshot the hardware system, synthesized and characterized the gold nanoparticles, and developed the software. Finally, the system was assembled inside a box composed of a rigid container, a sample holder, and a touchscreen display. Instructions for replicating this instrument are reported in the paper, while further details and explanations for instructors and students are provided in the Supporting Information. (As Provided).
Anmerkungen	Division of Chemical Education, Inc. and ACS Publications Division of the American Chemical Society. 1155 Sixteenth Street NW, Washington, DC 20036. Tel: 800-227-5558; Tel: 202-872-4600; e-mail: eic@jce.acs.org; Web site: http://pubs.acs.org/jchemeduc
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01