Raspberry_Pi_Education_Manual.pdf

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The Raspberry Pi
Education Manual
Introduction
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The Raspberry Pi
Education Manual
Version 1.0 December 2012
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
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The Raspberry Pi Education Manual
Contents
000
0. Introduction ............................................................................. 5
000
001
1. A beginner’s guide to Scratch............................................. 7
001
1.1 Scratch basics ............................................................... 9
1.2 Moving sprites ..............................................................15
1.3 Animation (loops) ..........................................................18
1.4 Maths cat .....................................................................23
1.5 Artiicial intelligence ......................................................29
1.6 Control .........................................................................35
1.7 Scratch games .............................................................44
What next? ..........................................................................50
010
2. Greenfoot on the Raspberry Pi ..............................................
010
Coming soon!
011
3. Experiments in Python .......................................................72
011
3.1 Getting to grips with Python .........................................73
3.2 MasterPy ......................................................................86
3.3 Roman Numerals & data manipulation ..........................89
3.4 Getting artistic ..............................................................94
3.5 Simulations and games ............................................. 100
3.6 Limited resources - memory & storage ...................... 106
3.7 Accessing the web - providing a weather forecast ..... 108
This is only the beginning - where do we go from here? .... 111
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4. Human-computer interfacing ......................................... 113
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4.1 Twitter ....................................................................... 115
4.2 Email application ....................................................... 116
4.3 Remote Procedure Call ............................................. 118
4.4 Web applications ....................................................... 120
4.5 General Purpose Input/Output (GPIO) ....................... 125
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5. GeoGebra: fun with maths! .....................................................
101
Coming soon!
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6. The Linux Command Line ............................................... 152
6.1 Commands are just programs ................................... 153
6.2 Command syntax and ile structure ........................... 155
6.3 The superuser ........................................................... 161
6.4 Creating and destroying iles and directories .............. 163
6.5 Remote access to the Raspberry Pi .......................... 166
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7. What next? .......................................................................... 169
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Where are the Greenfoot and GeoGebra chapters?
The Greenfoot and GeoGebra chapters have been left out of this edition of the
manual. These programs rely on software called a Java virtual machine, which
is currently being optimised for the Raspberry Pi to improve performance. You
can look forward to enjoying these chapters once we are happy that your user
experience will be of the same high quality as the chapters themselves!
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This manual was brought to you by...
This manual is a bit different. It was written entirely by unpaid volunteers, all of
whom are keen to share their expertise and enthusiasm for computing with as
many people as possible.
What all of these contributors have in common, apart from a youth spent
mainly indoors in front of ZX Spectrums and Commodore 64s, is that they’re all
members of the organisation Computing at School (CAS). To ind out more
about CAS and its work promoting the teaching of computer science, head over
to http://www.computingatschool.org.uk
Manual Contributors
Introduction by Andrew Hague
A beginner’s guide to Scratch by Graham Hastings
Greenfoot on the Raspberry Pi by Michael Kölling
Experiments in Python by Andrew Hague
Human-computer interfacing by Ben Croston
GeoGebra: fun with maths! by Adrian Oldknow
The Linux Command Line by Brian Lockwood
Where next? by Clive Beale
Manual Production
Karl Wright, Robert Cruse and Paul Kingett of Publicis Blueprint
Digital Contributors
The following people offered contributions not covered in the manual, but available
online and on your SD card.
Scratch Pong by Bruce Nightingale
Caesar Cipher by Brian Starkey
Fly by Alan Holt
Special Thanks
Martin Richards (University of Cambridge)
Simon Humphreys (Computing at Schools)
Alex Bradbury (University of Cambridge/Raspberry Pi Foundation)
Liz Upton (Raspberry Pi Foundation)
Eben Upton (Raspberry Pi Foundation)
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