基于深度学习的化学生物跨学科单元教学——设计低升糖指数零卡代糖  

Unit Teaching Based on Deep Learning in Chemistry and Biology:Design Zero Calorie Sugar Substitute with Low Glycemic Index

作　　者：李茜[1] 张亚慧 唐灵芳 LI Qian;ZHANG Ya-Hui;TANG Ling-Fang(The Affiliated High School of Peking University,Beijing 100190,China)

机构地区：[1]北京大学附属中学,北京100190

出　　处：《化学教育(中英文)》2025年第1期33-39,共7页Chinese Journal of Chemical Education

基　　金：北京市教育科学“十四五”规划2022年度青年专项课题“双减”背景下学生自主构建跨学科概念的高中科学课程建设研究(CDCA22121);北京市海淀区教育科学“十四五”规划重点课题“初高贯通双碳主题项目学习课程建设研究”(HDGH20230164)。

摘　　要：本单元教学基于深度学习理念,围绕“结构决定性质,性质决定应用”这一化学和生物学共通的核心概念,针对2个学科对“性质”理解和表达的差异,围绕“生命活动的本质是微粒间的相互作用”的跨学科下位概念,探讨化学与生物学课程对性质认识的区别与联系,从而发展对“结构决定性质,性质决定应用”核心概念的结构化认识,即建构核心概念就是“宏观辨识与微观探析”等化学学科核心素养和“结构功能观”等生物学科核心素养的具体体现,促进学生的化学与生物学学科核心素养融合发展。以“设计低升糖指数零卡代糖”为驱动性任务,针对学生感兴趣的糖和代糖,确定了“从化学键的角度,认识糖的性质和主要功能”“代糖为什么是甜的”“如何获得零卡代糖”和“辩证认识糖和代糖”等具有内部逻辑关联的关键问题,开发系列核心学习任务,并细化为促进学生认知发展的学习活动。This unit teaching is based on the concept of deep learning,focusing on the common core concept of“structure determines property,and property determines application”in chemistry and biology.Based on the lower level interdisciplinary concept of“the essence of life activities is the interaction between particles”,this paper explores the differences and connections between the understanding of properties in chemistry and biology courses,thereby developing a structured understanding of the core concept,that is,understanding that the core concept is the specific embodiment of core competencies in chemistry such as“macroscopic identification and microscopic analysis”and biology such as“structural functional view”,promoting the integration and development of core competencies in chemistry and biology among students.Taking“designing low glycemic index zero calorie sugar substitutes”as the driving task,a series of core learning tasks are developed for students’interests in sugars and sugar substitutes.Key questions with internal logical connections,such as“understanding the properties and main functions of sugars from the perspective of chemical bond”,“why sugar substitutes are sweet”,“how to obtain zero calorie sugar substitutes”,and“dialectical understanding of sugars and sugar substitutes”,are developed and refined into learning activities that promote students cognitive development.

关 键 词：深度学习 跨学科 单元教学 糖和代糖 

分 类 号：G63[文化科学—教育学]