The ancients said, "Learning begins with thinking, and thinking originates from doubt." In teaching, according to the characteristics of teaching materials, suspense is set through interesting exercises to reveal contradictions, arouse students' cognitive conflicts, make students doubt and ask for clarification. You will be curious.

For example, when teaching how to judge whether a fraction can be converted into a finite decimal, the teacher can first ask the students to quote a simplest fraction at will, and then the teacher can quickly judge whether it can be converted into a finite decimal, and the students can verify that the teacher's judgment is 100% correct. At this time, students have doubts about "what method the teacher uses to judge", and they have a strong thirst for knowledge and are eager to learn the method of judgment.

(2) Attract curiosity with interest.

Curiosity is a psychological tendency to explore new things and different things. Pupils are very curious and will ask all kinds of questions about new and different information, urging them to observe and think. In teaching, interesting exercises can be used to arouse students' curiosity and stimulate their thirst for knowledge. For example, when teaching triangle classification, we can design an exercise to guess what triangle it is: the first one only shows a right angle, and the students guess it is a right triangle; The second one only shows an obtuse angle, and the students guess it is an obtuse triangle; The third one only shows an acute angle, and the students casually say it is an acute triangle. At this time, the teacher drew this triangle, which at first glance is an obtuse triangle or a right triangle. The students are curious. Why? Have a strong desire to explore.

(3) Promote thinking with interest.

Flexible, diverse, novel and interesting exercises can help students overcome boredom, maintain a strong interest in learning and promote effective thinking.