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“电路”单元试教分析

2021-01-10田玥

科教导刊 2021年15期

田玥

摘要“电路”单元借助导线、灯泡、电池等电器元件和许多有趣的探究活动,帮助学生建构电路概念:知道电路是包括电源在内的闭合回路,电路的通断可以被控制;有的材料容易导电,而有的材料不容易导电;电是重要的能源,但有时也具有危害性,知道安全用电的常识。试教后发现,整个单元结构缜密,探究活动丰富,具有较强的逻辑性。教材这样设计,既让学生有一个愉快的学习经历,又为他们的终身学习和发展奠定了基础。

关键词 电路 试教目的 实施步骤

中图分类号:G424文献标识码:ADOI:10.16400/j.cnki.kjdk.2021.05.017

Analysis of Trial Teaching of“Circuit”Unit

TIAN Yue

(Heping District Nanjing Street No.9 Primary School, Shenyang, Liaoning 110002)

Abstract: With the help of wires, bulbs, batteries and other electrical components and many interesting in? quiry activities, the "circuit" unit helps students construct the concept of circuit: knowing that the circuit is a closed circuit including power supply, and the on-off of the circuit can be controlled; Some materials conduct electricity easily, while others do not; Electricity is an important energy source, but sometimes it is also harm? ful. We should know the common sense of safe use of electricity. After the trial teaching, it is found that the whole unit structure is meticulous, the inquiry activities are rich, and it has strong logic. This design of teach? ing materials not only makes students have a pleasant learning experience, but also lays a foundation for their lifelong learning and development.

Keywords: circuit; the purpose of trial teaching; implementation steps

“电路”单元借助导线、灯泡、电池等电器元件和许多有趣的探究活动,帮助学生建构电路概念:知道电路是包括电源在内的闭合回路,电路的通断可以被控制;有的材料容易导电,而有的材料不容易导电;电是重要的能源,但有时也具有危害性,知道安全用电的常识。试教后发现,整个单元结构缜密,探究活动丰富,具有较强的逻辑性。

试教目的及实施步骤

1.试教目的

(1)教学内容是否按照课程标准的要求,与学生的日常生活相联系,充分考虑学生已有的知识和经验,以科学概念的转变、建构、发展为线索展开教学过程。

(2)检测教材中设计的教学模块是否给学生了提供足够的观察、讨论的机会,以逐步加深他们对科学概念的理解。

(3)评估学生在连贯的单元学习后,哪些方面得到了发展。

2.实施过程

试教过程中,一位教师主讲,一位教师跟踪观察。主要步骤有:

(1)对学生进行前概念调查,主要考查他们对常见电现象的了解情况。……

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