《科学课程标准》明确指出:“科学探究是科学学习的中心环节,要以科学探究为最为重要的学习方式。”教师有效的指导是学生科学探究的前提,是学生学而有效的基石。以教科版科学四年级下册《食物包装上的信息》为例,怎样指导才能使学生从食品包装上的信息,正确选择健康的食品?从而了解收集信息的方法,更具备初步的分析、整理信息的能力?怎样才能通过探究意识到食品包装上的信息对选择食品的意义,自觉获取和利用有价值的信息呢?要达到这样的探究目的,教师的指导策略显 “Science Curriculum Standards” clearly states: “Scientific inquiry is the key link in scientific learning and scientific inquiry is the most important way of learning.” “Effective teacher instruction is the prerequisite for students ’scientific inquiry and the cornerstone for students’ effective learning . For example, in the fourth edition of Science Textbook, ”Food Packaging Information", how to guide students to make the right choice of healthy food from the information on food packaging so as to understand the method of information collection and preliminary analysis and arrangement Information ability? How can we explore the meaning of food packaging by exploring the meaning of information on food packaging, and consciously obtain and use valuable information? To achieve this inquiry purpose, the teacher’s instructional strategy was significantly