Computing Algorithms Debug Whats new? Decomposing Physical - - PowerPoint PPT Presentation

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Mar 08, 2024 40 likes •211 views

The Curriculum from September 2014 Computing Algorithms Debug Whats new? Decomposing Physical Systems Programs Digital Devices Networks The Curriculum from September 2014 Many words / phrases / ideas in Computer Science started in the

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The Curriculum from September 2014

Computing

Algorithms Debug Decomposing Physical Systems Programs Digital Devices Networks

What’s new?

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The Curriculum from September 2014

Many words / phrases / ideas in Computer Science started in the 'real world'.

Oxford English Dictionary 11th March 1889: "Mr. Edison, I was informed, had been up the two previous nights discovering 'a bug' in his phonograph - an expression for solving a difficulty, and implying that some imaginary insect has secreted itself inside and is causing all the trouble."

Greek: pro = before Graphein = write Or 'write publicly'.

BUG

PROGRAM

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The Curriculum from September 2014

A set of rules to be followed: In calculations and In problem-solving.

Algorithm

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The Curriculum from September 2014

Algorithm

Examples: Cake recipe How to draw a square Instructions to move your robot How to get changed for PE Instructions to build a car in DT Plan to build a Lego model Directions to hidden treasure How to build a paper plane

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The Curriculum from September 2014 Algorithm

A set of rules to be followed.

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The Curriculum from September 2014 Algorithm

A set of rules to be followed

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The Curriculum from September 2014

Hokey Cokey

Algorithm

Birdie Song Time Warp Cha Cha Slide

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The Curriculum from September 2014

Fully straighten left arm Bend left arm 90° Repeat x2 Shake left arm up and down Shake left arm right to left Turn right 360° Right arm Left leg Right leg Whole self

This will possibly require a new algorithm

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The Curriculum from September 2014

Floor plan

How would you get out via the fire escape if there was a fire? Write the instructions from point A – what are the different ways of exiting?

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The Curriculum from September 2014 Humans make mistakes Programs will therefore contain bugs / errors Part of the programming cycle Requires logical reasoning Resilience and persistence

Debug

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The Curriculum from September 2014

What is debugging?

Debugging is where you Identify and remove errors

To debug, you need to be:

Methodical
Thorough
Clear

http://www.bbc.co.uk/guides/ztkx6sg#z3xv34j

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The Curriculum from September 2014

What is debugging?

Identify and remove errors Syntax bug – spelling / layout Logic bug – steps in the sequence

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The Curriculum from September 2014

Making a jam sandwich

Debugging

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The Curriculum from September 2014

When we solve computer programming problems we need to make choices about what to do and what order to do them in. Sometimes the problem is so big or complex that we don’t know where to start. Decomposition is when we break a problem down into smaller parts to make it easier to tackle.

Decompose

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The Curriculum from September 2014

Physical Systems Digital devices

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The Curriculum from September 2014

£8

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The Curriculum from September 2014

Hour of Code http://code.org/learn BBC Bitesize (iWonder) http://www.bbc.co.uk/guides/zxgdwmn Codemonkey http://www.codemonkey.co.il/challenges/0 Scratch https://scratch.mit.edu/