Practice Strategy Of Cultivating Chemistry Core Literacy In High School Based On Domino Chemistry Experiment

With the rapid development of today's information age,countries all over the world put forward higher requirements for talent training.Social responsibility,professional ethics,awareness of independent innovation,ability to cooperate with others,knowledge and cultural level and practical operation skills have become necessary skills for talents.In order to meet the needs of society,through the unremitting research of scientists,it is considered that the core of cultivating talents is to develop the core literacy of disciplines.Chemistry is a subject based on experiment.Under the new curriculum concept,high school chemistry emphasizes the main position of experiment in teaching.In chemistry class,students design experiments and operate experiments by themselves,and draw relevant conclusions through analyzing experimental phenomena,intense discussion and independent summary,which can effectively cultivate students' chemistry core literacy.By sorting out the literature,this paper summarizes,compares and analyzes the cases of introducing domino chemical experiment into middle school chemistry teaching at home and abroad,and believes that the introduction of domino chemical experiment into high school chemistry classroom teaching is conducive to the development of students' core literacy.By combing the chemical knowledge points of senior high school,the knowledge system suitable for domino chemical experiment is divided into two categories: one is element compound experiment and the other is chemical reaction principle experiment.Under the background of new curriculum standards and new teaching materials,according to the characteristics of knowledge system,a variety of high school domino chemical experiment devices are studied and designed,and the design principles and experimental steps of high school chemical domino experiment are put forward.In order to understand the specific effect of domino chemical experiment,taking "aluminum triangle" and "iron triangle" as examples,a complete experimental design is carried out and applied to practical teaching.According to the results of the middle school entrance examination,two classes with no obvious difference are selected from the first grade of senior high school for the control experiment.Domino chemistry experiment is introduced into the experimental class.The control class adopts the traditional teaching method and sets up a variety of examination methods for control.Finally,the demonstration results show that the scores of students in the experimental class are significantly better than those in the control class,which shows that it is feasible to introduce chemical domino experiment into chemistry teaching in senior high school.Combined with the actual teaching situation,this paper summarizes the teachers' teaching strategies for domino chemical experiment,and suggests paying attention to preclass preview and hierarchical evaluation of students with different learning conditions.The introduction of domino chemistry experiment in teaching allows students to formulate experimental plans and operate experiments by themselves,which can deepen students' intuitive feeling of abstract things.Students' cooperative inquiry strengthens students' ability of expression and communication,cooperation and autonomous learning.Group discussion strengthens students' ability to raise and solve problems scientifically,promotes the development of scientific inquiry ability,reflection and evaluation,and exercises students' questioning thinking.The interest of domino chemical experiment can enhance students' interest in learning chemistry courses.The introduction of this type of experiment in teaching can improve students' academic performance and learning attitude to varying degrees,and implement the cultivation of students' chemical core literacy.