“探究食物中储存的能量”是北师大版《生物学》初中七年级教材中的一个重要探究实验。探究不同食物样品中储存的能量,是对不同食物样品储存的能量进行定性和半定量分析。此探究实验教材没有给出统一的实验装置,实验前需要师生自己动脑、动手设计,制作一个简易的食物热量测定仪。在实际教学中,已有教师对该实验作出不同的教学设计,然而对在如何最大限度地减少热量的散失方面缺少有效的办 “Exploring the energy stored in food ” is an important research experiment in the textbook of the seventh grade of Biology of Beijing Normal University. Exploring the energy stored in different food samples is a qualitative and semi-quantitative analysis of the energy stored in different food samples. This inquiry experimental teaching material does not give a unified experimental device, teachers and students need their own brain prior to the experiment, hands-on design, making a simple food calorimeter. In actual teaching, teachers have already made different teaching designs for this experiment, however, there is a lack of effective management on how to minimize the heat loss