2. Use conjecture and verification to create problem situations. Psychological research shows that students' thinking activities always start from problems and develop in solving them. The process of students' learning is a process of constantly asking questions and constantly solving problems. Therefore, in the process of teaching, the problem situation is constantly created, which makes students have cognitive conflicts, makes students in a state of "thinking through their hearts but not getting it, and words are full of energy", and stimulates students' thirst for knowledge. Teachers provide conditions for actively exploring and discovering problems, so that students' thinking can be promoted and developed in guessing and verifying problems.
3. Teaching context refers to a learning environment with learning background, scenarios and learning activity conditions, which is set according to the teaching content in classroom teaching, is suitable for and acts on the learning subjects, and produces certain emotional reactions, so that they can learn actively and constructively.