最近分别听了两位教师上《不同材料的“锅”》一课,两位教师各自选取了不同材料来做“锅”烧水的实验。第一位教师选择的材料是钢、铝、铁等三种;第二位教师选择了钢、铝、铁、塑料等四种材料,而教材中安排了四种“锅”——铝“锅”、玻璃“锅”、陶瓷“锅”和铁“锅”。 Recently, two teachers respectively listened to the lesson “different materials” pot “, two teachers each chose different materials to do” pot “boiling water experiment. The first teacher chose three kinds of materials: steel, aluminum and iron. The second teacher chose four kinds of materials, including steel, aluminum, iron and plastic, and the teaching materials arranged four kinds of ”pan“ - aluminum ”Pot “, glass ”pot “, ceramic ”pot “ and iron ”pot ".