分析概念图在高中生物教学中的应用

生物是高中学科的重要组成部分,但其自身内容丰富且不易理解。加之教学方法较为传统,难以调动学生学习积极性。所以,对于生物学科的教学,教师应寻找科学有效的方法。分析概念图运用于生物学教学中,可以有逻辑性地将各个知识点分类,将零散知识点清晰地罗列出来,保持学生学习的积极性。本文对此进行分析,阐述概念图在生物教学中的应用,以及作用。

试析概念图在高中生物学习中的学习技巧

随着近年来我国经济快速发展，基础教育体制也在深化改革，在新的教育趋势下，如何利用分析概念图学好高中生物学知识已成为当前高中生最关心的问题。高中生物作为一门综合性的经验习得性学科，有着一定的学习规律及方法，利用分析概念图将学科中各个知识点及原理统筹在一起进行学习，有助于我们找到知识点之间的内在联系，掌握正确的学习方法，提高学习效率。鉴于此，本文就分析概念图在高中生物学习中的运用展开详细分析并提出具体的研究思路，以供广大读者借鉴。

中学教师数学知识结构的模型分析

中学教师数学知识结构模型是建立在教师的知识图式上，从知识的本质度、贯通度、关联度和运用度等4个维度刻画数学教师知识结构的定量特征；通过中学教师导数知识结构模型发现：不同类型教师在导数知识观、连通度、表征方式和结构的均衡性上存在差异．

Sustainable Design of Turbofan Engine： A Computer-Aided Design and Finite Element Analysis

A compressive design and analysis of a turbofan engine is presented in this paper. The components of jet engine have been analyzed based on mechanical design concept. An attempt has been to select materials based on sustainability and green design considerations. The energy content （e） of the materials has been one of the parameters for material selection. The choice of material has a substantial impact on cost, manuthcturing process, and the life cycle efficiency. All components nose cone, fan blade, inlet shaft, including compressor has been solid modeled using Siemens NX 11.0 CAD software. The finite element analysis of every component was performed and found safe. A tolerance analysis was performed before assembly of the turbofan engine. A numerical analysis was completed on blade and inlet geometries to determine a more efficient turbofan engine. Thermal analysis was executed oi1 the cone and suitable corrections were made. Finally, the cost and the total energy were estimated to show how much energy is needed to manufacture a turbofan jet engine.

例谈以大概念为统领的初中生物学单元作业设计

单元作业的设计,在站位上要着眼于学生核心素养的发展,在结构上要呈现单元整体内容,在任务设计上要立足学情.以大概念的构建为统领,设计单元作业目标体系,搭建作业框架,结合学情选择作业的形式和难度,使单元作业成为核心突出、结构清晰、进阶有序的有机整体.