Scratch for intermediates course
Download as PPT, PDF•2 likes•1,588 views
This document provides an overview of advanced concepts in the Scratch programming environment, including using variables, control structures, text handling, lists, debugging tips, and connecting Scratch to physical computing devices. It also lists several resources for learning more about Scratch programming and provides examples of tasks to complete using these intermediate Scratch concepts.
![Lists
Lists
A named area of computer memory
A series of boxes that stores data
For things that can change (vary)
For all or For sprite
Import list – text file from computer
Export list – output to computer
Examples: Haikus ...
KS2 ... work with variables and various forms of input and output
KS3 ... make appropriate use of data structures [for example, lists, tables or arrays]](https://image.slidesharecdn.com/scratchforintermediatescourse-140418145020-phpapp01/85/Scratch-for-intermediates-course-14-320.jpg)
Scratch for intermediates course
- 1. Scratch for Intermediates Matthew Parry CAS Master Teacher @becsalana [email protected]
- 2. • Teaching •Trained via GTP in Hampshire •Shirland Primary School •Swanwick School and Sports College •Computing at School Master Teacher • IT career •15+ years as Programmer, Designer, Project Manager •Civil Service, AA, Sony, Satellite TV red button •COBOL, C, C++, VB, Java, Unix, PCs, • Earlier •Home: ZX81, ZX Spectrum •School: BBC Model B
- 3. • To investigate advanced elements of Scratch • To become familiar with some interfaces to Scratch • To plan how to use Scratch across the curriculum OBJECTIVES
- 4. • To make a timetables quiz ... TASK
- 5. Broadcasts Sends a message to all sprites and stage But nothing happens unless sprite responds to the message Green flag is a broadcast message What is the difference between ... and Why use? •To get other sprites to do something •Reuse code •Splits script into manageable parts KS2 work with variables and various forms of input and output
- 6. Control Blocks Forever Forever if <condition> Repeat <#> If <condition> If <condition> else What difference do these make to your scripts? Where would you use them? KS2 …use sequence, selection, and repetition in programs ; use logical reasoning to explain how some simple algorithms work
- 7. Control Blocks Wait until <condition> Repeat until <condition> What about these? How do they differ? Where would you use them? KS2 …use sequence, selection, and repetition in programs ; use logical reasoning to explain how some simple algorithms work
- 8. Control Blocks Stop script Stop all Version 2.0 What different effects do these have? Where would you use them? KS2 …use logical reasoning to explain how some simple algorithms work
- 9. Variables Variables A named area of computer memory A box that stores data For something that can change (vary) Variable for all sprites or Just for a sprite? What difference does that make? KS2 work with variables and various forms of input and output
- 10. Text Handling Text Task Ask for users name. Then ask five quiz questions. (Make some of answers numeric) Keep score of correct answers. At end display “<name>, you got <score> out of 5” KS3 ... understand how data of various types (including text, sounds and pictures) can be represented and manipulated digitally
- 11. Validation of Inputs Validation To ensure the input is what you want Why? Task For quiz numeric answers make sure you get a number. Ask for input again if not valid. KS2 ... work with variables and various forms of input and output
- 12. Build Your Own Blocks Build Your Own Blocks (Scratch 2.0 only) Why? To reuse code e.g. validation What is a Parameter? What is an Argument? Task Make number validation block Pass in range parameters <lower> and <upper> Extension: pass in number of digits expected
- 13. Variable Monitors Normal Large Slider Max/Min Where could you use each of these? •For debugging •As changeable text/numbers – e.g. Score •To affect an application e.g. Sphere Maths KS2 work with variables and various forms of input and output
- 14. Lists Lists A named area of computer memory A series of boxes that stores data For things that can change (vary) For all or For sprite Import list – text file from computer Export list – output to computer Examples: Haikus ... KS2 ... work with variables and various forms of input and output KS3 ... make appropriate use of data structures [for example, lists, tables or arrays]
- 15. Tips and Tricks - Help Help Website http://scratch.mit.edu/help/ V1.4 Help Menu Help Page... Help Screens... Right click on block V2.0 Tips at right hand side of script area Blocks ? at top of screen
- 16. Tips and Tricks - Comments Comments V1.4 Right click in background – “add comment” Drag comment over block to attach V2.0 Right click on block – “add comment” Why use? Gives clarity to script Shows understanding Assessment KS2 ... use logical reasoning to explain how some simple algorithms work and to detect and correct errors in algorithms and programs
- 17. Tips and Tricks – Sprite Control Control a sprite V1.4 – at top of sprite scripts V2.0 – click next to sprite What do those icons all do? Run this script and click them as it runs Watch x and y and direction ... V1.4 padlock does same as V2.0 “can drag in player” What does blue line on sprite/circle do?
- 18. Tips and Tricks - Turbo Turbo Mode Speeds up all scripts V1.4 via edit menu V2.0 shift click on green flag When would you use this? When large scripts Complex maths Example - Art
- 19. Tips and Tricks - Debugging Debugging Single Stepping (V1.4 only) See which block is being processed KS1 ... create and debug simple programs KS2 ... use logical reasoning to explain how some simple algorithms work and to detect and correct errors in algorithms and programs
- 20. Tips and Tricks - Drawing Perfect shapes (circles and squares) When drawing hold down shift Transparency V1.4 – white and grey squares V2.0 – red diagonal line
- 21. Tips and Tricks – Animated gifs Animated gifs V1.4 Drag gif onto costumes tab of an existing sprite Or import gif onto costumes tab of an existing sprite V2.0 Create new sprite using gif New costume is created from each frame http://heathersanimations.com/index.html
- 22. Need an account on http://scratch.mit.edu/ first V1.4 Upload project to scratch website via Share menu V2.0 Need to share project Use “Embed” button below project to create html code Cut and Paste into website More information V1.4 http://wiki.scratch.mit.edu/wiki/Embedding_Projects_(1.4) V2.0 http://wiki.scratch.mit.edu/wiki/Embedding_Projects Embed projects in own websites
- 23. Interfaces to Scratch Lego Wedo - education.lego.com Picoboards (Scratch 1.4) - www.sparkfun.com/products/10311 Kinect2Scratch (Scratch 1.4- scratch.saorog.com/ Scratcher Control for Android - khanning.com/scratchercontrol/ Makey Makey - makeymakey.com/
- 24. Resources Scratch website/forums - scratch.mit.edu/ CAS website - http://community.computingatschool.org.uk/ Scratch website - Lesson Plans & Resources - scratch.ie/home Derbyshire Computing Share Drive - goo.gl/ucNR17
- 25. BOOKS Learn to Program with Scratch by Majed Marji ISBN: 9781593275433 Adventures in Raspberry PI by Carrie Anne Philbin ISBN: 9781118751251