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Justin Arnold's Shop

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Teacher of Computer Science and IT, providing a range of resources, mostly relating to computing, but many can be used in a cross curricular way and are designed to be easy to adapt.

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Teacher of Computer Science and IT, providing a range of resources, mostly relating to computing, but many can be used in a cross curricular way and are designed to be easy to adapt.
Binary Code Icon Worksheets (8 x Worksheets)
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Binary Code Icon Worksheets (8 x Worksheets)

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Fun, but challenging worksheets for students studying binary code and encoding bitmap images. Each of the 8 sheets includes both answer sheet and a worksheet. The answer sheet shows a set of 4 different 8 x 8 bit icons, with the decimal equivalent of the binary representation for each row shown on the left. Students need to convert the decimal value into binary, and then fill in the pixels for that row accordingly, eventually generating the icon image. With a set of 8 worksheets, each featuring 4 different images, this set provided 32 activities. Both student worksheets and clear answer sheets for the teacher are included.
Binary Worksheet Generator
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Binary Worksheet Generator

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Unlimited worksheet generator for work on binary code. This generator can very quickly create the following randomised worksheets for students: • Decimal to Binary (2-8 bit length) • Binary to Decimal (2-8 bit length) • Binary Addition (2-8 bit length) • Binary Shift (2-8 bit length) Simply by selecting the bit length you can generate a full worksheet in PDF format ready for printing or sharing with a single button click. All worksheets can easily be customised if you wish. This worksheet generator can produce over a undecillion different worksheets - that’s a ‘1’ with 36 zeros after it! Easily enough to keep students busy. The difficulty of the worksheets can easily be changed by altering the bit length, allowing for differentiation/levelling. ANSWER SHEETS ARE INCLUDED WITH EVERY WORKSHEET FOR QUICK, SIMPLE MARKING!
Journey of an Email
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Journey of an Email

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PowerPoint Show (editable) with rehearsed timings and a video file format which show step by step how an email will travel around the world passing through various pieces of network equipment, networks, companies and even under the sea to reach its destination in seconds. Designed for a Year 8 class originally as a demonstration of a task the students then proceeded to try themselves.
Guess the Phrase Quiz - Networks
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Guess the Phrase Quiz - Networks

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Whole class activity based on the TV show Wheel of Fortune, with 10 words or phrases relating to KS3 Computer Networks for students to work out by guessing one letter at a time. Complete with clear graphics, easy controls, animation and audio.
Guess the Phrase Quiz - Computer Hardware
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Guess the Phrase Quiz - Computer Hardware

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Whole class activity based on the TV show Wheel of Fortune, with 10 words or phrases relating to KS3 Computer Hardware for students to work out by guessing one letter at a time. Complete with clear graphics, easy controls, animation and audio.
Computer Networks
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Computer Networks

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Highly visual and very clear presentation introducing the concept of computer networks. Includes analogies that get children to think of road networks with traffic on them. Explains the differences between network topologies, as well as the concepts of LANs and WANs.
JavaScript fantasy name generator
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JavaScript fantasy name generator

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Series of linked html files that allow students to either experience simple JavaScript functionality, or disassemble it or edit it for practice. Alternatively it could be used by the teacher as a demonstration, or broken down for students to rebuild.
Data validation & conditional formatting lesson
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Data validation & conditional formatting lesson

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This lesson teaches students to create what looks like an Amazon product page in Microsoft Excel, helping them to learn how to use data validation rules and conditional formatting rules. A teacher demonstration file is included, as well as two worksheets, and two student activity files.
Bitmap Encoding Lesson
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Bitmap Encoding Lesson

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Humorous PowerPoint presentation (25 slides) that teaches all about bitmap encoding using cat memes, colour and clear examples. Also included is a full worksheet that follows on from the lesson, and a very thorough answer sheet/guide. These resources should last between 1-2 lessons at least.
Interactive PowerPoint Exam (Produces Graded Certificate)
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Interactive PowerPoint Exam (Produces Graded Certificate)

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Originally developed to support the ECDL course, this is a 50 question on-screen interactive exam on using PowerPoint. Once launched the app will ask for the student's name, and then present them with fifty questions. Students respond by clicking on the correct part of the application. Once the exam has finished students are given an accurate percentage result, and a printable certificate that includes the name of the exam, their name, the date, and their final score.
3 x Differentiated Workbooks on Little Man Computer
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3 x Differentiated Workbooks on Little Man Computer

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These three differentiated workbooks are for students to work through over a series of lessons. They introduce the basics of algorithms, assembly language, programming, how a CPU works and Little Man Computer. Each booklet includes step by step guides, exercises, challenges, opportunities to show progress and easy teacher marking.
JavaScript Town Name Generator
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JavaScript Town Name Generator

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Simple website demonstrating how JavaScript can be used to generate random town names. This resource can either be given to students to disassemble and edit, or for the teacher to learn how JavaScript can be used in class to create a simple resource that students will enjoy.
Number Grid (Conditional Formatting in Excel)
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Number Grid (Conditional Formatting in Excel)

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Can be used either as a demonstration of an interactive number grid that show how number patterns can be represented by colours, or as a demonstration of how conditional formatting rules can be applied to a grid of cells. Change the two numbers on the left to see the grid update immediately, creating waves of colour.
Searching Algorithms
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Searching Algorithms

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27 slide presentation that introduces the idea of searching algorithms using real world examples and attention-capturing facts and statistics. Clearly explains and demonstrates how both linear searching and binary searching works, and compares the two for efficiency and speed.
Algorithmic Thinking
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Algorithmic Thinking

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PowerPoint presentation to introduce the idea of algorithms and computational thinking. Slides include practical exercises on computational thinking, and take students through the basic ideas through to representing algorithms using flow charts, and up to bubble sort algorithms.
Algorithm Demonstration
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Algorithm Demonstration

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A simple but effective introduction to the concept of algorithms. Students are shown a series of random numbers one at a time, and have to tell the teacher which is the largest number. They don't know the range, and they don't know the quantity of numbers. However, all students can do it, by quickly creating a set of simple rules to follow in their head - an algorithm. Without realising it they create a set of instructions to follow, they create a variable, and they carry out comparison tests. They use input, and output, and effectively demonstrate all of the attributes of a simple algorithm. This demonstration can then be used to introduce these ideas, and the whole concept of computational thinking.
Books Database (50 books)
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Books Database (50 books)

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A sample database (Microsoft Access) for students to use, explore, test and extend. The database contains 50 of the most popular teen fiction books, with many different types of field included such as title, author, date published, number of pages, front cover image, blurb, link to Amazon etc. Two tables are included, one containing the books and the other containing reviews, so that cross table queries can be designed.
Real Logos Created in PowerPoint
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Real Logos Created in PowerPoint

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A selection of real logos, compared with re-created logos made entirely in PowerPoint using the Shapes tool. This was to demonstrate to classes how dynamic and versatile the shapes tool can be for creating logos and images.