高中化学新课程标准主张以发展化学学科核心素养为主旨，要求教师积极开展“素养为本”的课堂教学实践，主动探索“素养为本”的有效课堂教学模式和策略。新课程标准还指出，要发展学生的化学学科核心素养应当注重教学内容的整体设计，对化学单元，主题进行整体规划，包含对教学目标的整体制定，对教材内容合理组织。单元整体教学整合了学科知识，打破单时授课的壁垒，使知识更加结构化，更有利于学生对素养的落实。

本研究通过对课标要求，必修2有机化合物的重要性及学生学情，教学现状及研究现状分析，提出了本研究的主题为素养为本的化学单元整体教学实践研究-以人教版必修2有机化合物为例。接着对学生在必修有机化学的学习情况进行调查，结合老教师的教学经验，为教学设计提供参考；再结合课程标准，教材内容，学生学情制定单元整体教学计划，进行教学实施。在教学实施过程中，关注学生的课堂表现及课后作业情况，旨在发展学生的模型认知思维，建立结构决定性质的化学学习思想，让学生能对陌生的物质进行性质预测，并分析解释原因。

本研究对学生的问卷结果，测试成绩，课堂表现，考试成绩进行了分析，得出结论：素养为本的单元整体教学实践研究可以在一定程度上提升学生在必修阶段的有机化学学习效果，能让学生建立有机化学学习的思路和方法。通过本次实践，增加了学生对有机化学的学习兴趣，提升了学生在此模块的学习成绩。同时也说明对必修2有机化合物进行单元整体设计能发展学生的模型认知思维，建立结构决定性质的化学学习思想。在单元教学中采用模型搭建，创设真实性问题情境，开展实验为主的多种探究活动等教学方式，能取得良好的教学效果。

The new curriculum standard of chemistry in senior high school advocates developing the core accomplishment of chemistry subject as the theme, and requires teachers to actively carry out the classroom teaching practice of "accomplishment oriented" and actively explore the effective classroom teaching mode and strategy of "accomplishment oriented".The new curriculum standard also points out that in order to develop the students' core accomplishment of chemistry subject, it is necessary to pay attention to the overall design of the teaching content, make an overall plan for the chemistry unit and theme, including the overall formulation of the teaching objectives and the reasonable organization of the textbook content.Unit teaching integrates subject knowledge, breaks the single-time teaching barriers, makes knowledge more structured, and is more conducive to students' accomplishment.

Based on the analysis of the curriculum standard requirements, the importance of compulsory 2 organic compounds, students' learning situation, teaching status and research status, this study proposed the overall teaching practice research of chemistry unit with the theme of accomplishment as the core -- taking the compulsory 2 organic compounds as an example.Then it investigates the students' learning situation in the compulsory organic chemistry course and provides reference for the teaching design by combining the teaching experience of the old teachers.Combined with the curriculum standards, textbook content and students' learning situation, the unit overall teaching plan is formulated and implemented.In the process of teaching implementation, attention should be paid to students' classroom performance and homework after class, aiming at developing students' model cognitive thinking, establishing chemical learning thoughts with structurally decisive properties, enabling students to predict the properties of unfamiliar substances and analyze and explain the reasons.

Based on the analysis of students' questionnaire results, test scores, classroom performance and exam results, this study draws the conclusion that the holistic teaching practice research based on literacy can, to a certain extent, improve students' learning effect of organic chemistry in the compulsory stage, and enable students to establish their thinking and methods of organic chemistry learning.Through this practice, students' interest in organic chemistry has been increased and their academic performance in this module has been improved.At the same time, it also shows that the holistic unit design of compulsory 2 organic compounds can develop students' model cognitive thinking and establish the chemical learning thought of structure-determining properties.In unit teaching, good teaching effect can be achieved by using model building, creating real problem situation and carrying out various inquiry activities based on experiment.This study provides a reference for the majority of front-line teachers on teaching strategies.