| Junior high school chemistry is the last subject of nine-year compulsory education,which has its distinct characteristics.First,there are many concepts in chemistry at the initial stage.Taking the classification of substances as an example,there are dozens of concepts involved according to different classification standards,such as mixture,pure substance,simple substance,compound,etc.The concept of weak logical relationship brings some difficulties to junior high school chemistry teaching.Second,chemistry is a discipline that studies the composition,structure,nature and change of substances.Whether it is the composition,structure,nature or law of change of matter,it involves more memory knowledge.Third,chemistry,as a natural science based on experiments,has great differences from traditional subjects such as Chinese,mathematics and physics.It has special subject languages and symbols,such as chemical formula and chemical equation.The unique chemical language also increases the difficulty of students' understanding and memory.Fourth,chemistry is a subject based on experiments.Learning chemistry,research chemistry and applied chemistry all need the support of experiment.One of the key points of Chemistry Teaching in junior middle school is to help students master certain experimental exploration skills.If there is no solid experimental operation knowledge as the basis,the impact of the hypothetical exploration on the teaching effect is limited.The standardized operation of chemical experiments is also the key point of teaching and the key knowledge that students need to master.The teaching of chemical knowledge memory has brought great pressure to the junior middle school chemistry teaching.When the students first learn chemistry,they think it is mainly rote learning,and the negative effect is more serious.In order to reduce the memory burden of students in learning chemistry to a certain extent,combined with several years of junior high school chemistry teaching experience,the research topic is"the application research of independent innovation doggerels in junior high school chemistry teaching".It mainly includes the following contents:First,through literature search and learning,we searched and integrated the literature about the application and research of doggerels in chemistry teaching.Second,combined with teaching practice and subject knowledge,we independently compiled the first volume doggerels of grade 9 chemistry.Third,the five principles of compiling doggerels are summed up:rhyming principle,rhythmic principle,simplicity principle,scientific principle and easy to understand principle.Fourthly,the self-made doggerels is applied in junior middle school chemistry teaching practice,and two subjects,water composition and combustion and fire fighting,are selected as examples for teaching design.Fifthly,the experiment explores the influence doggerels on junior middle school chemistry teaching effect.Sixth,the use of self-made questionnaires to investigate students' use of doggerels in the learning process.Through teaching practice and experimental exploration,the following conclusions are drawn1 The use of doggerels teaching can improve students' academic performance to a certain extent,and has a positive impact on the teaching effect;2 The teaching of doggerels is helpful to cultivate students' interest in learning chemistry.3 The use of doggerels teaching is helpful to arouse students' enthusiasm in class.4 To some extent,the doggerels can help the students to prepare before class,listen in class,consolidate after class,test and other learning links,among which,it is more helpful to listen in class,but less helpful to preview before class. |
