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Simple_and_Compound_Machines_with_Images.pptx

General physics

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General Science Overview•
Simple and Compound Machines Grade 11 Physics | 5Es Lesson Model
Learning Standards • Content Standard: • The efficiency of simple and compound machines can be improved by applying basic physics principles. • Learning Competency: • Apply concepts of translational and rotational motion to design and build prototypes of efficient simple and compound machines.
Lesson Objectives • 1. Differentiate between simple and compound machines. • 2. Explain how translational and rotational motions apply to machine efficiency. • 3. Analyze how basic physics principles improve the efficiency of machines. • 4. Design and build a working prototype using motion and efficiency principles.
ENGAGE: Introduction • Watch a short video showing real-life machines in action. • Discussion Questions: • - What do these machines help us do? • - How do they reduce effort? • - Have you built any simple machine before?
EXPLORE: Station Activities • Station Activities: • 1. Lever – Rotational Motion • 2. Pulley – Rotational + Translational Motion • 3. Inclined Plane – Translational Motion • 4. Compound Machine (e.g., Scissors) • Task: Identify type of motion and effort reduction
EXPLAIN: Concepts and Principles • - Simple Machines: Inclined plane, lever, pulley, etc. • - Compound Machines: Combos of simple machines • - Translational vs. Rotational Motion • Efficiency Formula: • Efficiency (%) = (Output Work / Input Work) × 100
ELABORATE: Prototype Challenge • Design a compound machine to lift a load 20cm. • Requirements: • - Use at least 2 simple machines • - Apply both translational and rotational motion • - Maximize efficiency
EVALUATE: Reflection & Assessment • Reflection Questions: • - What motions did your machine use? • - How can you improve its efficiency? • Performance Task: • Submit a photo/sketch + written explanation of your design
Summary • - Simple and compound machines reduce effort. • - Physics principles optimize machine function. • - Translational and rotational motions enhance efficiency.