Key Words: Project based learning, ZnO, food hygiene, bacteria
ABSTRACT
Project-Based Learning is an instructional methodology that encourages students to learn and apply knowledge and skills via experience. The role of the teacher shifts to the students and students work more independently through the whole process. System gives opportunities to students to build 21st century skills as collaboration, communication, critical thinking, and the use of technology, which will serve them well in the workplace and their later life. Learning becomes deeper and long-lasting, and inspires students a love of science even in tough subjects. This project involves an alternative preservative for food by preventing bacterial growth with ZnO photocatalyst in the presence of UV light. In this study, all the literature survey and experimental procedure are performed by ourselves in a laboratory environment and the project has brought new information to us in the fields of both chemistry and biology. We believe in as Swiss Psychologist Jean Piaget says, “knowledge is a consequence of experience”.
References:
[1] John W. Thomas, Ph. D, A Review of Research on Project-Based Learning, March, 2000
[2] Amina Amine Khodja, Tahar Sehili, Jean-François Pilichowski, Pierre Boule, Photocatalytic degradation of 2-phenylphenol on TiO2 and ZnO in aqueous suspensions, Journal of Photochemistry and Photobiology A: Chemistry 141, p.231–239, 2001
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[8] https://www.tandfonline.com/author/Bell%2C+Stephanie">Stephanie Bell, Project-Based Learning for the 21st Century: Skills for the Future, A journal of Educational Strategies, Issues and Ideas, Vol. 83, Issue 2, 2010