EI607 Session 4 Key Computational Concepts

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Information about EI607 Session 4 Key Computational Concepts

Published on March 7, 2014

Author: theSLATE

Source: slideshare.net


SESSION OBJECTIVES 1. Develop a deeper understanding of sequence, selection and repetition 2. Develop an understanding of variables 3. Develop an understanding of inputs and outputs

COMPUTING - KS1/KS2 Key stage 2 Pupils should be taught to:  design, write and debug programs that accomplish specific goals, including controlling or simulating physical systems; solve problems by decomposing them into smaller parts  use sequence, selection, and repetition in programs; work with variables and various forms of input and output  use logical reasoning to explain how some simple algorithms work and to detect and correct errors in algorithms and programs  understand computer networks including the internet; how they can provide multiple services, such as the world wide web; and the opportunities they offer for communication and collaboration  use search technologies effectively, appreciate how results are selected and ranked, and be discerning in evaluating digital content  select, use and combine a variety of software (including internet services) on a range of digital devices to design and create a range of programs, systems and content that accomplish given goals, including collecting, analysing, evaluating and presenting data and information  use technology safely, respectfully and responsibly; recognise acceptable/unacceptable behaviour; identify a range of ways to report concerns about content and contact.



WHAT ARE VARIABLES? “Variables work like labelled boxes that allow you to store things inside them to retrieve later.” Fundamentals of Programming: Variables http://goo.gl/D7etz data identifier

VARIABLES IN SCRATCH For details of using variables in Scratch (including the difference between Global and Local variables) read: http://wiki.scratch.mit.edu/wiki/Variable http://wiki.scratch.mit.edu/wiki/Variables_Tutorial


INPUT & OUTPUT What other forms of input and output can you think of? HINT: Think of the various digital devices you use.

PONG! Working in pairs: 1. Find ‘Pong Debug Activity’ (you can just search for this) http://scratch.mit.edu/projects/18913337/ 2. Read and follow the instructions shown next to the game (NB: you will need to scroll the Instructions text) 3. Make sure you save and share your project/s before you finish

MULTIPLE CODING OPPORTUNITIES „Don‟t fall into the trap of thinking that as you have used selection in one program that you have covered this. This is like using addition once and then thinking that you don‟t need to use it again. Selection, repetition, variables are constructs you could take a lifetime to learn how to manipulate. Pupils need multiple opportunities to use and experiment with these ideas. The new English Computing program [sic] of study talks about, “repeated practical experience of writing computer programs” in the aims, lets [sic] work towards this.‟ Phil Bagge „How I teach programming to 7-11 year olds using Scratch‟ http://goo.gl/khKgOj

FOLLOW UP TASK Read the following article. Brennan & Resnick (2013) “New frameworks for studying and assessing the development of computational thinking.” http://web.media.mit.edu/~kbrennan/files/Brennan_Resnic k_AERA2012_CT.pdf http://goo.gl/hKpudx

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