Breaking Down Computing Problems
Understanding Decomposition Year 7 Technology 60-minute lesson
What is Decomposition?
Breaking complex problems into smaller parts Makes difficult tasks manageable Helps us focus on one piece at a time Essential skill in computing and everyday life
Planning a Birthday Party
Break down into smaller tasks Choose venue and date Create guest list Plan food and drinks Organise decorations and entertainment Send invitations Buy supplies and prepare
Decomposing a Sports Event
Choose the sport and venue Plan teams and participants Organize equipment and supplies Create schedule and rules Arrange safety and first aid Set up registration process
Cooking a Meal: Decomposition in Action
Choose what to cook Get ingredients from shops Prepare ingredients (wash, chop, measure) Cook each part in order Serve and enjoy the meal
Decomposing a Homework Project
Break down large project into smaller tasks Identify what resources you need Set deadlines for each part Tackle one section at a time Check progress regularly
Decomposing Garden Planning
Break down garden planning into manageable tasks Design layout - where plants, paths, and features go Prepare soil - digging, adding compost, levelling Plant selection - choosing flowers, vegetables, or herbs Maintenance schedule - watering, weeding, pruning
Key Points About Decomposition
Break big problems into smaller, manageable parts Each part is easier to understand and solve Work on parts separately or with a team Combine solutions to solve the whole problem Used everywhere: cooking, building, coding, planning
Group Challenge: School Library System
Form groups of 5 students Break down: 'Create a system for organizing a school library' Use sticky notes on A3 paper Present your decomposition plan 15 minutes to plan, 2 minutes to present
Reflection Questions
How did breaking down the problem help your group? What challenges did you face? Which sub-tasks seemed most important? How do the parts connect to each other?
Independent Practice: Quiz App
Your task: Plan steps to create a simple quiz app Break it down into at least 5 smaller parts Use diagrams or lists - your choice Think about what users need to do 20 minutes to complete
Assessment and Differentiation
{"left":"Formative: Oral questioning during activities\nPeer feedback during presentations\nIndividual decomposition plan review\nFocus on clarity and logical sequencing","right":"Additional scaffolds for SEN learners\nVisual aids and buddy support for EAL\nExtension: Consider task dependencies\nChallenge: Think about debugging benefits"}
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