Videotaped experiment in chemistry: Should i play it before or after sending students to the lab? [Experimento de química grabado en vídeo: ¿Debería mostrarse antes o después de enviar a los estudiantes al laboratorio?]

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Helena Sepúlveda (Author) Other; Luciano Moreira (Author) FEUP; Carla Morais (Author) FCUP; João Carlos Paiva (Author) FCUP

Journal

Title: Journal of Science Education

Vol. 16 No. 2

Pages: 63-65

ISSN: 0124-5481

Publisher: Foundation Journal of Science Education

Indexing

Scopus - 0 Citations

Scientific classification

FOS: Social sciences > Educational sciences

Other information

Authenticus ID: P-00G-K0F

Abstract (EN): This article aims to analyse if and how relevant the timing of exposure to a videotaped experiment and its stojyboard may be, both before and after the experiment is performed. 27 students of one 11th grade class took part in the experiment, subdivided in two conditions and 5 work groups per shift. Interviews were conducted and their results were analysed using the NVivo software. The results indicate that both student perception and laboratorial work perfonnance are different according to the timing of exposure to the video. Exposure before laboratory work resulted in a more controlled and guided behaviour, fewer mistakes and shorter work time to conduct the experiments. Exposure after the experiment allows a better evaluation of students performance, and a higher level of student's reflection about the way experiment was conducted. Results are thus marked by a tension between goal orientation (appraisal) and learning orientation. The teacher 's role is to manage the pros and cons of both possibilities. © Fundación Revista de Educación de las Ciencias.

Language: English

Type (Professor's evaluation): Scientific