GCSE Energy: Energy and Efficiency Teaching Pack

Multimedia-rich lesson resources. Original videos, crystal-clear content and worksheet. GCSE Physics: Energy and Efficiency.
Eighth in a series of 11 lessons covering the unit: “Conservation and Dissipation of Energy”

Lesson 8: Energy and Efficiency

Clear learning objectives:

• The efficiency of a device is the fraction of the total energy supplied which is transferred usefully
• We can use an equation to calculate efficiency
• Efficiency can be written as a decimal between 0 and 1 or as a percentage
• Efficiency has no units
• Efficiency of over 100% is impossible
• Machines waste energy due to friction, air resistance, electrical resistance, mechanical resistance and noise
• Efficiency can be improved, for example by lubricating to reduce friction
• Use as a stand-alone lesson or part of a sequence
• Full set of lesson resources
• PowerPoint presentation with embedded videos
• A quick and engaging starter to display on the board
• Original MM Science videos to supplement content
• Modelled calculations
• Real-life examples
• Differentiated worksheet activities and answers incorporated into lesson resources
• Additional videos to reinforce understanding of learning objectives
• Mini whiteboard multichoice questions as a quick test of learning

MM Science are Martin and Mike, two Science teachers with specialisms in Physics and Biology and having nearly 60 years of teaching experience in state comprehensive and grammar schools.
Our philosophy is to write inspiring resources, with original, sometimes humorous video material. At the core of our purpose is to provide accurate science clearly explained. Our True and False discussions are designed to address misconceptions held by students and adults alike.

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