一、设问要给学生一定的思维空间精心设问是打开学生思维大门的钥匙 ,教师要有目的地设疑、激疑 ,设问要有针对性、启发性 ,问在知识的关键处 ,问在思维的转折点 ,从而引导学生去思考、去探索。这就要求教师的设问不仅要“精” ,而且对学生来讲 ,要有较高的思维价值 ,给学生留 First, set the question to give students a certain amount of thinking space is the key to open the door to student thinking, teachers should have the purpose of setting suspicion, suspicion, set the question to be targeted, enlightening, asked at the key to knowledge, Ask the turning point in thinking, so as to guide students to think and explore. This requires teachers to ask questions not only to “fine”, but also for students, have a higher value of thinking, to students