文章基本信息

标题：‘The brain needs nutrition’: pupils’ connections between organizational levels
本地全文：下载
作者：Alma Jahic Pettersson ; Lena A.E. Tibell ; Ragnhild Löfgren 等
期刊名称：Nordic Studies in Science Education
印刷版ISSN：1504-4556
出版年度：2021
卷号：17
期号：1
页码：48-63
DOI：10.5617/nordina.7930
出版社：Naturfagsenteret i samarbeid med Universitetet i Umeå
摘要：Previous research suggests that connecting organizational levels of biological systems is challenging for pupils. In the present study we investigated 122 pupils’ written responses to a question in a national biology test concerning how nutrient molecules are adsorbed by the small intestine and transported to the brain. We aimed to investigate what awareness the pupils have of the connection between the digestive and circulatory systems. We mapped the pupil’s expressed knowledge by using content analysis which was performed in five steps including connection between the systems, organizational levels and scientific explanations. We found that the most correct descriptions contained the highest number of connections between the digestive and the circulatory systems and linking of the different organizational levels. The most correct descriptions included the highest proportion of the meso level. Therefore, knowledge at the meso level seems to be essential for grasping connections between macro- and submicro-level processes, and connections of digestion and circulation systems.
其他摘要：Previous research suggests that connecting organizational levels of biological systems is challenging forpupils. In the present study we investigated 122 pupils’ written responses to a question in a national biologytest concerning how nutrient molecules are adsorbed by the small intestine and transported to thebrain. We aimed to investigate what awareness the pupils have of the connection between the digestiveand circulatory systems. We mapped the pupil’s expressed knowledge by using content analysis whichwas performed in five steps including connection between the systems, organizational levels and scientificexplanations. We found that the most correct descriptions contained the highest number of connectionsbetween the digestive and the circulatory systems and linking of the different organizational levels. Themost correct descriptions included the highest proportion of the meso level. Therefore, knowledge at themeso level seems to be essential for grasping connections between macro- and submicro-level processes,and connections of digestion and circulation systems.