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An Approach to Improving Science Knowledge About Energy Balance and Nutrition Among Elementary- and Middle-School Students

机译：提高中小学生能量平衡和营养科学知识的途径

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Unhealthy diets, lack of fitness, and obesity are serious problems in the United States. The Centers for Disease Control, Surgeon General, and Department of Health and Human Services are calling for action to address these problems. Scientists and educators at Baylor College of Medicine and the National Space Biomedical Research Institute teamed to produce an instructional unit, “Food and Fitness,” and evaluated it with students in grades 3-7 in Houston, Texas. A field-test group (447 students) completed all unit activities under the guidance of their teachers. This group and a comparison group (343 students) completed pre- and postassessments measuring knowledge of concepts covered in the unit. Outcomes indicate that the unit significantly increased students' knowledge and awareness of science concepts related to energy in living systems, metabolism, nutrients, and diet. Pre-assessment results suggest that most students understand concepts related to calories in food, exercise and energy use, and matching food intake to energy use. Students' prior knowledge was found to be much lower on topics related to healthy portion sizes, foods that supply the most energy, essential nutrients, what “diet” actually means, and the relationship between body size and basal metabolic rate.
机译：不健康的饮食，缺乏健身和肥胖是美国的严重问题。疾病控制中心，外科医生和卫生与公共服务部呼吁采取行动解决这些问题。贝勒医学院和美国国家太空生物医学研究所的科学家和教育工作者合作组建了一个教学单位“食品与健身”，并与得克萨斯州休斯顿的3至7年级的学生进行了评估。一个现场测试小组（447名学生）在其老师的指导下完成了所有单元活动。该小组和一个比较小组（343名学生）完成了评估该单元所涵盖概念知识的前后评估。结果表明，该单元大大提高了学生对与生命系统能量，新陈代谢，营养物质和饮食有关的科学概念的认识和认识。评估前的结果表明，大多数学生了解与食物中的卡路里，运动和能量消耗以及将食物摄入量与能量消耗相匹配的概念。发现学生的先验知识要少得多，这些话题涉及健康的份量，提供最多能量的食物，必需的营养素，“饮食”的实际含义以及体重与基础代谢率之间的关系。

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