Reach Crest Learning

Year 9 · Computing

Year 9 Computing worksheets

Each lesson has four online activities and four different printable worksheets.

Programming

State what a function promises

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1State what a function promises — Quick checkOpen online → 2State what a function promises — Guided practiceOpen online → 3State what a function promises — Apply your learningOpen online → 4State what a function promises — Explain and challengeOpen online →

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1State what a function promises — Skills practiceView PDF worksheet → 2State what a function promises — Guided practiceView PDF worksheet → 3State what a function promises — Apply and reasonView PDF worksheet → 4State what a function promises — Challenge and reviewView PDF worksheet →

Programming

Separate the algorithm from its syntax

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1Separate the algorithm from its syntax — Quick checkOpen online → 2Separate the algorithm from its syntax — Guided practiceOpen online → 3Separate the algorithm from its syntax — Apply your learningOpen online → 4Separate the algorithm from its syntax — Explain and challengeOpen online →

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1Separate the algorithm from its syntax — Skills practiceView PDF worksheet → 2Separate the algorithm from its syntax — Guided practiceView PDF worksheet → 3Separate the algorithm from its syntax — Apply and reasonView PDF worksheet → 4Separate the algorithm from its syntax — Challenge and reviewView PDF worksheet →

Programming

Track a result across a collection

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1Track a result across a collection — Quick checkOpen online → 2Track a result across a collection — Guided practiceOpen online → 3Track a result across a collection — Apply your learningOpen online → 4Track a result across a collection — Explain and challengeOpen online →

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1Track a result across a collection — Skills practiceView PDF worksheet → 2Track a result across a collection — Guided practiceView PDF worksheet → 3Track a result across a collection — Apply and reasonView PDF worksheet → 4Track a result across a collection — Challenge and reviewView PDF worksheet →

Programming

Clean representation without changing meaning

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1Clean representation without changing meaning — Quick checkOpen online → 2Clean representation without changing meaning — Guided practiceOpen online → 3Clean representation without changing meaning — Apply your learningOpen online → 4Clean representation without changing meaning — Explain and challengeOpen online →

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1Clean representation without changing meaning — Skills practiceView PDF worksheet → 2Clean representation without changing meaning — Guided practiceView PDF worksheet → 3Clean representation without changing meaning — Apply and reasonView PDF worksheet → 4Clean representation without changing meaning — Challenge and reviewView PDF worksheet →

Programming

Test boundaries and failure paths

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1Test boundaries and failure paths — Quick checkOpen online → 2Test boundaries and failure paths — Guided practiceOpen online → 3Test boundaries and failure paths — Apply your learningOpen online → 4Test boundaries and failure paths — Explain and challengeOpen online →

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1Test boundaries and failure paths — Skills practiceView PDF worksheet → 2Test boundaries and failure paths — Guided practiceView PDF worksheet → 3Test boundaries and failure paths — Apply and reasonView PDF worksheet → 4Test boundaries and failure paths — Challenge and reviewView PDF worksheet →

Algorithms

Count work under stated assumptions

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1Count work under stated assumptions — Quick checkOpen online → 2Count work under stated assumptions — Guided practiceOpen online → 3Count work under stated assumptions — Apply your learningOpen online → 4Count work under stated assumptions — Explain and challengeOpen online →

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1Count work under stated assumptions — Skills practiceView PDF worksheet → 2Count work under stated assumptions — Guided practiceView PDF worksheet → 3Count work under stated assumptions — Apply and reasonView PDF worksheet → 4Count work under stated assumptions — Challenge and reviewView PDF worksheet →

Algorithms

Maintain a sorted part

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1Maintain a sorted part — Quick checkOpen online → 2Maintain a sorted part — Guided practiceOpen online → 3Maintain a sorted part — Apply your learningOpen online → 4Maintain a sorted part — Explain and challengeOpen online →

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1Maintain a sorted part — Skills practiceView PDF worksheet → 2Maintain a sorted part — Guided practiceView PDF worksheet → 3Maintain a sorted part — Apply and reasonView PDF worksheet → 4Maintain a sorted part — Challenge and reviewView PDF worksheet →

Algorithms

Keep what the task needs

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1Keep what the task needs — Quick checkOpen online → 2Keep what the task needs — Guided practiceOpen online → 3Keep what the task needs — Apply your learningOpen online → 4Keep what the task needs — Explain and challengeOpen online →

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1Keep what the task needs — Skills practiceView PDF worksheet → 2Keep what the task needs — Guided practiceView PDF worksheet → 3Keep what the task needs — Apply and reasonView PDF worksheet → 4Keep what the task needs — Challenge and reviewView PDF worksheet →

Systems

Instructions and data use memory

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1Instructions and data use memory — Quick checkOpen online → 2Instructions and data use memory — Guided practiceOpen online → 3Instructions and data use memory — Apply your learningOpen online → 4Instructions and data use memory — Explain and challengeOpen online →

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1Instructions and data use memory — Skills practiceView PDF worksheet → 2Instructions and data use memory — Guided practiceView PDF worksheet → 3Instructions and data use memory — Apply and reasonView PDF worksheet → 4Instructions and data use memory — Challenge and reviewView PDF worksheet →

Systems

A fixed number of bits has a limit

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1A fixed number of bits has a limit — Quick checkOpen online → 2A fixed number of bits has a limit — Guided practiceOpen online → 3A fixed number of bits has a limit — Apply your learningOpen online → 4A fixed number of bits has a limit — Explain and challengeOpen online →

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1A fixed number of bits has a limit — Skills practiceView PDF worksheet → 2A fixed number of bits has a limit — Guided practiceView PDF worksheet → 3A fixed number of bits has a limit — Apply and reasonView PDF worksheet → 4A fixed number of bits has a limit — Challenge and reviewView PDF worksheet →

Systems

Count pixels and bits per pixel

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1Count pixels and bits per pixel — Quick checkOpen online → 2Count pixels and bits per pixel — Guided practiceOpen online → 3Count pixels and bits per pixel — Apply your learningOpen online → 4Count pixels and bits per pixel — Explain and challengeOpen online →

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1Count pixels and bits per pixel — Skills practiceView PDF worksheet → 2Count pixels and bits per pixel — Guided practiceView PDF worksheet → 3Count pixels and bits per pixel — Apply and reasonView PDF worksheet → 4Count pixels and bits per pixel — Challenge and reviewView PDF worksheet →

Systems

Smaller representations have trade-offs

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1Smaller representations have trade-offs — Quick checkOpen online → 2Smaller representations have trade-offs — Guided practiceOpen online → 3Smaller representations have trade-offs — Apply your learningOpen online → 4Smaller representations have trade-offs — Explain and challengeOpen online →

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1Smaller representations have trade-offs — Skills practiceView PDF worksheet → 2Smaller representations have trade-offs — Guided practiceView PDF worksheet → 3Smaller representations have trade-offs — Apply and reasonView PDF worksheet → 4Smaller representations have trade-offs — Challenge and reviewView PDF worksheet →

Systems

A secure connection is not a truth certificate

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1A secure connection is not a truth certificate — Quick checkOpen online → 2A secure connection is not a truth certificate — Guided practiceOpen online → 3A secure connection is not a truth certificate — Apply your learningOpen online → 4A secure connection is not a truth certificate — Explain and challengeOpen online →

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1A secure connection is not a truth certificate — Skills practiceView PDF worksheet → 2A secure connection is not a truth certificate — Guided practiceView PDF worksheet → 3A secure connection is not a truth certificate — Apply and reasonView PDF worksheet → 4A secure connection is not a truth certificate — Challenge and reviewView PDF worksheet →

Projects

Choose a display that answers the question

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1Choose a display that answers the question — Quick checkOpen online → 2Choose a display that answers the question — Guided practiceOpen online → 3Choose a display that answers the question — Apply your learningOpen online → 4Choose a display that answers the question — Explain and challengeOpen online →

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1Choose a display that answers the question — Skills practiceView PDF worksheet → 2Choose a display that answers the question — Guided practiceView PDF worksheet → 3Choose a display that answers the question — Apply and reasonView PDF worksheet → 4Choose a display that answers the question — Challenge and reviewView PDF worksheet →

Projects

Test whether people can use the interface

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1Test whether people can use the interface — Quick checkOpen online → 2Test whether people can use the interface — Guided practiceOpen online → 3Test whether people can use the interface — Apply your learningOpen online → 4Test whether people can use the interface — Explain and challengeOpen online →

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Download a different PDF, complete it on paper and upload your work.

1Test whether people can use the interface — Skills practiceView PDF worksheet → 2Test whether people can use the interface — Guided practiceView PDF worksheet → 3Test whether people can use the interface — Apply and reasonView PDF worksheet → 4Test whether people can use the interface — Challenge and reviewView PDF worksheet →

Projects

Judge the result against requirements

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1Judge the result against requirements — Quick checkOpen online → 2Judge the result against requirements — Guided practiceOpen online → 3Judge the result against requirements — Apply your learningOpen online → 4Judge the result against requirements — Explain and challengeOpen online →

Print and upload

Download a different PDF, complete it on paper and upload your work.

1Judge the result against requirements — Skills practiceView PDF worksheet → 2Judge the result against requirements — Guided practiceView PDF worksheet → 3Judge the result against requirements — Apply and reasonView PDF worksheet → 4Judge the result against requirements — Challenge and reviewView PDF worksheet →