Bridging British Education Virtual Academy 伦桥国际教育
Review of Work, Energy, and Power Problems 功、能和功率问题的复习
1. Course Basic Information 1. 课程基本信息
Teaching Focus 教学重点
Solidifying understanding and calculation skills related to work, energy conservation (GPE to KE), power, efficiency, and resistive forces.
巩固与功、能量守恒（GPE到KE）、功率、效率和阻力相关的计算和理解技能。
Teaching Objectives 教学目标
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Accurately calculate time taken using Power = Work/Time for the roller coaster segment. 使用功率=功/时间，准确计算过山车段所需时间。
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Apply conservation of energy principles (GPE to KE) and account for resistive forces in calculations. 应用能量守恒原理（GPE到KE），并在计算中计入阻力。
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Calculate force from Power = Force x Velocity at constant speed. 在恒定速度下，利用功率=力x速度计算作用力。
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Differentiate between work done and energy changes in various scenarios. 区分不同情景下的功与能量变化。
2. Course Content Overview 2. 课程内容概览
Main Teaching Activities and Time Allocation 主要教学活动和时间分配
Roller Coaster Problem Set 1: Time Calculation (Power & Work): Calculated time taken to raise the carriage using P=W/t and W=mgh.
过山车问题集1：时间计算（功率与功）： 使用P=W/t和W=mgh计算提升车厢所需时间。
Roller Coaster Problem Set 2: Speed and Resistive Forces: Calculated speed at C using energy conversion, then used change in KE over distance to find average resistive force.
过山车问题集2：速度与阻力： 利用能量转换计算C点的速度，然后使用动能变化/距离来求平均阻力。
Car Efficiency and Power Calculations: Analyzed Sankey diagram to find internal energy loss percentage and calculated resistive forces using P=Fv.
汽车效率与功率计算： 分析Sankey图以找出内能损失百分比，并使用P=Fv计算阻力。
Work Done and Slide Potential Energy: Defined work done. Calculated KE at the end of a slide and used energy loss (GPE - KE - Work against slide friction) to find average resistive force.
功的定义与滑梯的势能计算： 定义了功。计算了滑梯末端的动能，并利用能量损失（GPE - KE - 对滑梯摩擦做的功）求平均阻力。
Car Efficiency and Travel Distance: Calculated work done against drag force per second (Power) and total distance using total energy and efficiency.
汽车效率与行驶距离： 计算了每秒克服阻力所做的功（功率）以及利用总能量和效率计算总距离。
Bullet Penetration and Concept Review: Calculated loss of KE and average frictional force exerted by plastic on a bullet. Discussed descriptive conceptual questions.
子弹穿透与概念回顾： 计算了子弹穿过塑料板时的动能损失和塑料施加的平均摩擦力。讨论了描述性概念问题。
Language Knowledge and Skills 语言知识与技能
Resistive forces, Power output, Kinetic energy (KE), Gravitational potential energy (GPE), Efficiency, Drag force, Thermal energy, Work done.
阻力，输出功率，动能，重力势能，效率，阻力，热能，功。
Conservation of mechanical energy (with friction/resistive forces), Definition of Work Done (W=Fs), Definition of Power (P=W/t = Fv), Relating energy change to work done against friction.
机械能守恒（考虑摩擦力/阻力），功的定义 (W=Fs)，功率的定义 (P=W/t = Fv)，能量变化与克服摩擦力所做功的关系。
Quantitative problem-solving using linked formulas from mechanics (Work, Energy, Power), unit conversion (kW to W, kg to N), and interpreting multi-step physics problems.
使用力学（功、能、功率）的链接公式进行定量问题解决，单位转换（kW到W，kg到N），以及解读多步骤物理问题。
Teaching Resources and Materials 教学资源与材料
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Exam-style problems focusing on Work, Energy, and Power. 侧重于功、能和功率的考试风格问题。
3. Student Performance Assessment (Jackson) 3. 学生表现评估 (Jackson)
Participation and Activeness 参与度和积极性
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Jackson actively participated, attempting all calculations independently and showing good recall of necessary formulae. Jackson积极参与，独立尝试了所有计算，并很好地记住了所需的公式。
Language Comprehension and Mastery 语言理解和掌握
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High comprehension of quantitative steps, especially in linking GPE loss to KE gain and accounting for friction sequentially. 对定量步骤的理解度很高，特别是在将GPE损失与KE增加联系起来以及逐步考虑摩擦力方面。
Language Output Ability 语言输出能力
Oral: 口语：
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Clear verbalization of the steps taken during calculations, occasionally seeking clarification on the application of definitions (e.g., work done). 清晰地口述了计算过程中采取的步骤，偶尔会寻求对定义应用的澄清（例如功的定义）。
Written: 书面：
N/A (Verbal/Whiteboard work assessment during session)
不适用（课程期间的口头/白板工作评估）
Student's Strengths 学生的优势
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Excellent ability to recall and apply relevant physics equations (P=W/t, W=Fs, GPE, KE). 出色地回忆和应用相关的物理方程的能力（P=W/t, W=Fs, GPE, KE）。
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Strong procedural accuracy in multi-step calculations, such as finding resistive forces. 在多步计算（如求阻力）中具有很强的程序准确性。
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Successfully identified that constant speed implies Thrust Force = Resistive Force in the car problem. 成功识别出恒定速度意味着汽车问题中推力等于阻力。
Areas for Improvement 需要改进的方面
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Needs further practice on the definition and explanation of conceptual/descriptive physics questions (e.g., why efficiency is never 100%, why a ball's bounce height decreases). 需要对概念性/描述性物理问题的定义和解释进行更多练习（例如，为什么效率永远达不到100%，为什么球的反弹高度会降低）。
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Minor hesitation when defining terms like 'Work Done' or linking definitions directly to equations. 在定义如“功”等术语或将定义直接与方程联系起来时，略有犹豫。
4. Teaching Reflection 4. 教学反思
Effectiveness of Teaching Methods 教学方法的有效性
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The problem-based approach was highly effective in reinforcing quantitative skills and demonstrating formula linkage. 基于问题的教学方法在加强定量技能和展示公式联系方面非常有效。
Teaching Pace and Time Management 教学节奏和时间管理
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The pace was fast, appropriate for covering a wide range of high-level application questions. 课程节奏快，适合涵盖广泛的高级别应用问题。
Classroom Interaction and Atmosphere 课堂互动和氛围
Engaged, focused, and productive. Jackson was motivated to solve complex numerical problems.
专注、投入且高效。Jackson有动力解决复杂的数值问题。
Achievement of Teaching Objectives 教学目标的达成
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Quantitative objectives were successfully achieved, with Jackson navigating complex calculations well. 定量目标已成功达成，Jackson很好地处理了复杂的计算。
5. Subsequent Teaching Suggestions 5. 后续教学建议
Teaching Strengths 教学优势
Identified Strengths: 识别的优势：
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Effective scaffolding of complex problems by breaking them down into manageable energy/work steps. 通过将复杂问题分解为可管理的能量/功步骤，实现了有效的支架搭建。
Effective Methods: 有效方法：
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Using previous calculation results (e.g., initial KE) to derive subsequent required values. 利用先前的计算结果（例如初始动能）来推导出后续所需的值。
Positive Feedback: 正面反馈：
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Teacher acknowledged Jackson's improved confidence in working out what each question is looking for. 老师肯定了Jackson在弄清楚每个问题要求什么方面信心增强了。
Next Teaching Focus 下一步教学重点
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Descriptive and explanatory physics questions, focusing on energy transfer and loss mechanisms. 描述性和解释性物理问题，重点关注能量转移和损失机制。
Specific Suggestions for Student's Needs 针对学生需求的具体建议
Conceptual Explanation & Definitions: 概念解释与定义：
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Practice writing out full, precise word definitions for key terms like 'Work Done' and 'Power' without relying on equations immediately. 练习写出关键术语的完整、精确的文字定义，如‘功’和‘功率’，不要立即依赖方程。
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For descriptive questions (like energy loss in a bouncing ball), use a structured energy accounting method (GPE_initial + KE_initial = GPE_final + KE_final + Work_lost). 对于描述性问题（如弹跳球中的能量损失），使用结构化的能量核算方法（初始GPE + 初始KE = 最终GPE + 最终KE + 损失的功）。
Calculation Linking: 计算步骤关联：
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When calculating efficiency, explicitly state the energy input (Total Energy from Petrol) and useful output (Work Done against Drag Force) for clarity. 在计算效率时，明确说明能量输入（来自汽油的总能量）和有用输出（克服阻力所做的功）以提高清晰度。
Recommended Supplementary Learning Resources or Homework 推荐的补充学习资源或家庭作业
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Complete the batch of descriptive exam-style questions mentioned by the teacher focusing on energy conservation in non-ideal systems. 完成老师提到的关于非理想系统中能量守恒的一批描述性考试风格问题。