一、提供感知材料形成概念科学概念是反映事物或现象的本质特性,它所反映的表质特性是这种事物所普遍的、特有的而别的事物都不具备的特性。学生由于知识面狭窄,往往会忽略本质特征,被次要特征迷惑,造成理解概念的错误。因此,教师要给学生提供充分而准确的感 I. THE PROVISION OF THE PERCEPTION OF THE PERCEPTION OF MATERIALS Conceptual science concept reflects the essential characteristics of things or phenomena, and the characteristics of the characteristics of the watches that they reflect are characteristics that are common to such things but not found in other things. Due to the narrow knowledge of students, students tend to ignore the essential features, confused by the secondary features, resulting in errors in understanding the concept. Therefore, teachers should give students a full and accurate sense