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Raymond Chambers's Shop

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My name is Ray Chambers. I'm a specialist in computing and have a first class honours degree in computer science. I'm currently the lead teacher of computer science at Brooke Weston Academy in Corby Northamptonshire. I have been teaching for roughly 8 years and I thoroughly enjoy my job. In 2015 I was fortunate to win the Pearson National Teaching Award for innovative use of technology. I also won the BAFTA for mentoring young coders.

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My name is Ray Chambers. I'm a specialist in computing and have a first class honours degree in computer science. I'm currently the lead teacher of computer science at Brooke Weston Academy in Corby Northamptonshire. I have been teaching for roughly 8 years and I thoroughly enjoy my job. In 2015 I was fortunate to win the Pearson National Teaching Award for innovative use of technology. I also won the BAFTA for mentoring young coders.
Python - Tkinter - User Interface - Computer Science - Programming - OCR
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Python - Tkinter - User Interface - Computer Science - Programming - OCR

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This is a simple task which will allow students to create a simple user interface in Python. It uses the Tkinter library which is built into most schools. They're able to create some simple procedures which quit and display error messages. It shows candidates how to add in buttons and gets them creating a simple interface in Python which they can use for programming. The idea of this is to get A-Level students started so that they can start thinking about using Python for their main project. It is suitable for GCSE and Lower Level students.
Lesson 2 - Object Orientation - OCR - Alevel - Python
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Lesson 2 - Object Orientation - OCR - Alevel - Python

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This lesson introduces constructors to students and talks about the need for setting up the class. There is an example program to work through with a worksheet attached. it shows students how to initialise variables in their program and how to pass items in. This should help students become more confident and builds on nicely from the previous task. If students have been absent they can pick it up quite easily.
OCR - Python Lesson 4 - Arithmetic
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OCR - Python Lesson 4 - Arithmetic

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This lesson introduces students to using operators such as Add, Subtract, Multiply, Divide and Exponentiation. They're also introduced to Mod (working out the remainder) and Quotient (working out the whole number). They're given a number of activities which allow them to apply some of this and will attempt working out the median and mean. After this they're given an activity which gets them to work with the OCR structure. They're required to decompose a problem, list success criteria and build a sleep calculator. They will need to list their variables and on top of this will also need to show the development of their code. The worksheet can be typed in. All operations are explained: - num1+num2 num1-num2 num1*num2 num1/num2 num1**num2 for exponent % used to explain remainder // used to explain whole number part of division Students given extension task / independent research task for finding out the mode.
A-Level Computer Science - Input, Output and Storage
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A-Level Computer Science - Input, Output and Storage

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This is a 50 mark assessment to check students understanding of input, output and storage devices. As the new spec for OCR is quite new. I went through all of the computing spec to find old questions which will map into the new specification. This gives you a good idea of how your students are performing. Students will answer the questions and their is an answer sheet for you to use so that you can mark your students. I currently use the OCR A-Level grade boundaries for a rough idea.
Bitwise Operators - A-Level Computer Science
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Bitwise Operators - A-Level Computer Science

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This task is a worksheet which explains the rules for bitwise operators and it explains some situations of where you might use it. On top of this it gives you a number of questions with an answer sheet which will help support your lesson. It explains the rules of AND, OR and XOR which are on the OCR A-Level Computer Science Syllabus.
CPU - Central Processing Unit - Von Neumann / Harvard / RISC / CISC
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CPU - Central Processing Unit - Von Neumann / Harvard / RISC / CISC

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This presentation is a follow on after students have already learnt about how the Fetch Execute Decode Cycle. The idea of the presentation is that they can flow on from what they've already learnt. This will focus on the AS Level - Von Neumann / Harvard systems and it explains the difference. Following on from this the students are taught the difference between CISC and RISC. The idea of this will be that they understand how instructions are split. There is a task at the end with requirements for students to build a revision poster at the end.
AS-Level 1.3.1 - Part 2 - Network Protocols - Computer Science AS/A-Level OCR
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AS-Level 1.3.1 - Part 2 - Network Protocols - Computer Science AS/A-Level OCR

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This lesson starts off with some previous exam questions about LAN and WAN. It includes answers and shows students where they can gather their marks. It then explains to students how a protocol works. It gives them an example and gets them to think about their communication. Following on from this there is a video explaining the TCP/IP stack with the 4 layers that they're likely to need to know. Each layer is broken down into key points. There is a single exam style question. Students are then expected to look up the remaining protocols which are used regularly in networks. This task can be through poster, video or other medium.
OCR - ASLEVEL - Computer Science - Testing
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OCR - ASLEVEL - Computer Science - Testing

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9 Slides looking at testing in computer science. Covers - Alpha Testing, Blackbox testing, Whitebox testing, Destructive testing, Acceptance testing and other test strategies. No worksheets attached.
Big O Notation - Computer Science - OCR A-Level
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Big O Notation - Computer Science - OCR A-Level

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A Powerpoint presentation explaining Big O Notation. There are some examples of code and some graphs which help students visualise what is meant by exponential and the complexity of algorithms. This was useful to my year 13 students and hopefully it will help yours.
Break down of floating point binary (How to do it) - A-Level Computer Science / Computing
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Break down of floating point binary (How to do it) - A-Level Computer Science / Computing

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Many of my students struggled with the concept of converting from denary into floating point binary. This presentation shows a variety of question and breaks down how to tackle the questions. There are 5 sample questions at the end of the presentation for students to attempt and the technique is broken down into simple steps to help both the teacher and the students understand it. It breaks down how to do some simple questions such as number 7 but also shows you how to work out negative numbers such as -0.375 and shows the technique for multiplying the decimal by 2. I hope that this will help struggling teachers.
Lesson 3 - Object Orientation - OCR - Alevel - Python - Design Class
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Lesson 3 - Object Orientation - OCR - Alevel - Python - Design Class

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This shows students how to design a class with a class diagram. It walks through the need to design classes and there is a worksheet attached that gets the students do design the class and build the program. They can use a number of different programming opportunities with this and it will help them for their A-level project.
Sound Representation & Data Representation
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Sound Representation & Data Representation

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This worksheet introduces sound to the students. They’re expected to answer a series of questions which talk about analogue sound, bit rate and bit depth. There are questions included which build on knowledge that they may have previously covered. For example, ASCII and Unicode. There are also questions about lossless and lossy compression included which support the need for compression on files.
OCR Computer Science 1-9: - Data Representation - End of Unit Assessment
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OCR Computer Science 1-9: - Data Representation - End of Unit Assessment

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Assessment covering the following areas of data representation: - Units - bits, bytes, nibble etc... Numbers - converting to hex, denary and binary Binary Shift How to convert whole denary numbers Characters - use of binary codes Character Sets Images - How to represent images as a series of pixels Images - Metadata included in a file Images - Colour depth and resolution Sound - Sampling rates / Size / Bit Rate / Frequency Compression - Need for compression / types of compression
Computer Science 1-9 - Networks Introduction - Part 2
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Computer Science 1-9 - Networks Introduction - Part 2

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Objective: - We’re learning to identify the hardware and classification linked with networks. This lesson includes notes in the teacher slides to help teachers understand the content they're delivering with links to videos and also embedded videos. During this lesson students will learn about: Client server models Client-Server Servers available Peer to peer networks Advantages and disadvantages Network hardware NIC Wireless access points Routers Switches Draw your own network diagram
Micro:bit - Lesson 1
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Micro:bit - Lesson 1

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This lesson gives you a structured break down to delivering the Micro:bit lesson for the first time. I have combined this with the Micro:bit book to make the creeper face. In this lesson: - * reason for the Micro:bit and discussion with the students * students given time to read health and safety instructions and feedback to the teacher * how to get onto the website. * pictures to show how to connect to the website * how to download the program in 3 easy steps * how to get the program onto the MicroBit * worksheet with extension * introduction to Selection * Challenge with video
Kodu Lesson 5 : - Pages and Selection (KS2/KS3)
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Kodu Lesson 5 : - Pages and Selection (KS2/KS3)

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This lesson will introduce to students how they're able to sequence and talks about how they're able to make code more efficient. There are teacher notes and there is information about advanced selection. This lesson will introduce Tinker time and will get the students to use pages within Kodu. Students will continue to work with Kodu after this to complete their game.
Kodu Scheme of work - Primary or Secondary
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Kodu Scheme of work - Primary or Secondary

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This scheme of work is purely a way of structuring some of the content for primary of secondary. There is examples of selection, moving and how to clone objects within the game. The first 3 lessons come with evidence worksheets and it's broken down in such a way to help you support your students. Students are encouraged through this scheme of work to develop a game but also to take regular print screens of testing their game. I have included all worksheets and powerpoints and there are lesson plans. The lesson plans are basic but show how to split the lesson into tasks. There is a free lesson to give you an idea of what to expect.
Computer Science 1-9: - Data Representation Lesson 1
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Computer Science 1-9: - Data Representation Lesson 1

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Lesson explaining how Data representation works. There is a PowerPoint which walks through two methods of conversion but it also specifies how to use binary. It explains to students place value and compares denary to binary. Lesson 1 in a series of 4 lessons. Students will also learn about: - Switches Binary Exam questions Binary conversion using switches Binary conversion using division Binary grid method Least / Most significant bit] Worksheet provided Content written by Ray Chambers - National Teaching Award Winner - 2015 - Innovative use of technology