Within KS3 Computer Science: Data Representation - Year 8, your students will recall and build upon understanding developed within Data Representation for Year 7 and learn the following: To recall binary and denary conversion techniques from year 7. To be able to add two binary numbers using binary addition and understand the term overflow error. Understand the use and purpose of ASCII and Unicode character sets. Understand how images are stored on a computer. Understand the relationship between resolution, colour depth and file size. Recap the terms ‘Base 2’ and ‘Base 10’ number systems. To apply understanding to the use of Hexadecimal (base 16). Your students will learn these concepts through a range of clearly presented explanations and a range of tasks and challenges to consolidate learning. This unit of work also includes a final assessment. Full teacher solutions also included! Before completing this unit of work, it is recommended that your students complete Data Representation for Year 7 and Computer Systems for Year 8 so they have an understanding of the different hardware components of a computer.

This visually appealing knowledge organiser is a quick summary to recap binary representation. It can help pupils revise for end of unit tests or GCSE computer science exams by including small straightforward facts that can be learnt in minutes. A powerful revision aid that your students will love. What are you waiting for? Grab your copy now and together we can boost your pupil’s confidence in understanding data representation. WHAT IS INCLUDED? This PDF knowledge organiser includes the important facts and a separate PDF document includes revision tips and an exam style question including a possible answer. HOW CAN I USE IT? This resource makes an ideal homework task, can be used as part of a lesson or given to pupils to help them with their revision. WHAT DOES IT COVER? This knowledge organiser includes easy to digest facts on the following topics: Data units Converting denary whole number to binary Add binary numbers Use binary shifts Convert binary into hexadecimal numbers The use of check digits Representing characters Character sets Representing images in pixels Metadata Colour depth Resolution Calculating the size of an image Sound sampling Sample size Bit rate Lossy and lossless compression . Get your copy of this fantastic knowledge organiser now. You’ll wonder how you ever managed without it. FREE BONUS PRODUCT INCLUDED As a special thank you for purchasing this product I am pleased to be able to also include a surprise FREE bonus gift. This gift is one of our complete resources which we will usually charge full price for but is yours absolutely free when you purchase this product. Just our little way of saying thank you to our valued customers. I hope you enjoy it and get use out of it, with my compliments. Click here to see my other computer science knowledge organisers

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.

11 to 15 hours of lesson time. Included: 1 x class PPT 1 x summative assessment and answer key 1 x post-assessment reflection and goal setting resource pack 18 x activity resources (revision sheets, learning stations, student-centered activity sheets, videos, vocabulary activity), Resource Contents: 114 x slide PPT 10 x carefully scaffolded lessons 9 x differentiated target task with model answers 1 x summative assessment lesson Topics covered: Analogue, digital and binary Denary, binary and hexadecimal number systems Converting between base 2, 10 and 16 Advantages of hexadecimal / binary addition & overflow ASCII and Unicode Digital representations of sound and images Data storage measurements: SI and IEC Image, sound and data compression

10 to 13 hours of lesson time. Included: 1 x class PPT 1 x summative assessment and answer key 14 x activity resources (revision sheets, input activity handouts, student-centered activity sheets, videos, vocabulary activity), Resource Contents: 105 x slide PPT 10 x carefully scaffolded lessons 8 x differentiated target tasks with model answers 1 x summative assessment lesson Topics covered: Analogue, digital and binary Denary, binary and hexadecimal number systems Converting between base 2, 10 and 16 Binary addition & overflow Logical binary shifts Data storage measurements: SI and IEC Data compression Lossless and Lossy compression

This is a computer science lesson without a computer. This is for KS3 students, and would be great as a cover lesson, a homework or for when a student needs to work elsewhere and you need a quick alternative lesson. This worksheet is 4 pages long, has some information and 3 tasks and an extension activity to complete. I have included teacher answers for non-specialists who may be covering your lesson, or for students to self and peer mark.

This is a written test about how data is represented in a computer system. It includes questions on binary, denary, hexadecimal, binary addition, logic gates, truth tables, ASCII, bitmaps and vector images and machine code. Suitable for GCSE Computer Science classes and KS3 Computing classes. A useful revision tool to help GCSE pupils recognise gaps in their knowledge. The test takes most students around 25 - 30 mins to complete. FREE BONUS PRODUCT INCLUDED As a special thank you for purchasing this product I am pleased to be able to also include a surprise FREE bonus gift. This gift is one of our complete resources which we will usually charge full price for but is yours absolutely free when you purchase this product. Just our little way of saying thank you to our valued customers. I hope you enjoy it and get use out of it, with my compliments.

A great introduction to understanding how text, images and sound are saved as binary. These ready to use data representation lessons will save you hours of preparation and can easily be adapted to meet your own requirements. WHAT IS INCLUDED? In this unit you have 3 ready-to-use lessons: ASCII characters Bitmap images Sound . Everything you need is included such as: a very high-quality accessible PowerPoint presentation for every lesson that effortlessly leads the teacher through the lesson and includes all the answers to the many questions and tasks the students need to complete a 2-sided editable worksheet for every lesson an easy-to-follow editable lesson plan for every lesson . PRIOR LEARNING This unit does expect pupils to be familiar with binary and in particular know that: Computers store numbers using binary. Binary can only contain 1s and 0s. A single binary digit is a bit. They can translate denary numbers into binary and binary numbers into denary by working out the column headings. . If your students are unfamiliar with these concepts, I highly recommend purchasing my 2 lesson unit called “Understanding Binary” which covers all of these topics and will ensure your students are ready for this unit. Many teachers purchase both units (Understanding Binary and Data Representation) together and run them as a single 5 week unit as they complement each other so well. EASY TO USE These ready to use resources are so straightforward that although I have included a lesson plan, most teachers can teach straight from the PowerPoint presentation without any further assistance. And best of all, the answers are included saving you time and energy. This makes these lessons suitable for experienced computing specialist teachers along with non-specialists and early career teachers (ECTs). EDITABLE RESOURCES I understand that teachers want to adapt their resources, so I’ve made the bold decision to make these resources editable. Therefore, if you need to use a particular template style for your school,or if you have students with specific educational needs, you can change the lesson to suit them. It gives you the flexibility to alter the lessons to suit your own particular needs. SCIENTIFICALLY PROVEN TEACHING TECHNIQUES These teaching resources have been specifically designed to aid pupils using educational psychology backed theories including dual coding, Mayer’s theory and the best techniques to alleviate cognitive load. Your students will have a higher retention rate, better and deeper understanding of the subject matter and will build their confidence in a natural way which reduces distractions and helps them focus on the learning. These lessons are highly interactive and engage students straight from the start. Just click on the BUY NOW button to download them straight away. You’ll wonder how you ever managed without them.

This video looks at representing a set of data using set-builder notation and comparing this method of data representation to other methods of data representation.

Data Representation , intended for the OCR exam board, GCSE. Covers the main aspects of section 4 for paper 2. Two full A3 sides, picture only shows one side.

Knowledge organiser and worksheet going through Hex to Denary. Hex to binary and Binary to Hex. Denary to hex

GCSE Computer Science revision mat/knowledge organiser for Data Representation

Are you looking for a robust, ready to use summative assessment to test your students understanding of data representation? Computers science teachers have been left in a wilderness, without a rigorous, fair and consistent way to test your student’s knowledge in key stage 3 … UNTIL NOW! WHAT IS TESTED? This written test has been carefully mapped to the UK’s Computing At Schools (CAS) Progression Pathways. It includes a mixture of multiple-choice, short answer and long answer questions. This assessment covers the following CAS Progression Pathway descriptions: Knows that digital computers use binary to represent all data. Knows that computers transfer data in binary. Understands the relationship between binary and file size (uncompressed) Defines data types: real numbers and Boolean. Queries data on one table using a typical query language. Understands how numbers, images, sounds and character sets use the same bit patterns. Performs simple operations using bit patterns e.g. binary addition. Understands the relationship between resolution and colour depth, including the effect on file size. Distinguishes between data used in a simple program (a variable) and the storage structure for that data. Knows the relationship between data representation and data quality. Understands the relationship between binary and electrical circuits, including Boolean logic. Understands how and why values are data typed in many different languages when manipulated within programs. . The test lasts 50 minutes. WHO IS THIS ASSESSMENT FOR? This test is paper 1 and has been written for year 8. If you are looking for the year 7 (paper 1) assessment, click here. If you are looking for the year 9 (paper 3) assessment, click here. HOW DO I USE THE ASSESSMENT? This assessment is super easy to use. Simply print out the question paper and give to your students. It is better to run this assessment in class rather than as a homework task to ensure reliability. Students complete the test on paper. HOW IS THE ASSESSMENT MARKED? You mark the papers yourself but don’t worry, you get an easy to follow mark scheme and can even watch the helpful video which shows you exactly how to mark it. HOW IS THE ASSESSMENT GRADED? Included in the resource is an Excel spreadsheet. Once you enter the marks onto the spreadsheet, it will automatically show you the total marks, the grade (A* to U) and if they have met expectations, are above expectations or are below expectations to help you with report writing. You also get a summary showing you how well the CAS Progression Pathways have been answered by your students to help you with future planning. This simple, easy to use summative assessment paper provides you with useful feedback your senior leadership team will love. Download it now to add it to your teacher toolkit.

DATA Presentation Lecture is covered during Quantitative Methods Module. Lecture outline: - Analyze the quantitative and qualitative data; - Display data in the form of table; - Display data in the form of graph. In this File you will find: - 1 DATA Presentation Lecture Power Point Presentation - 1 Seminar plan with 7 different interactive activities for the students This Lecture and Seminar is covered by the Bachelor Level Students

This unit covers Data Representation & Computer Architecture for N4 é N5. It covers: Binary Units Bin to Den and Den to Bin conversion ASCII Bit-Map Storage and Calculations of File Size Vector Graphic Storage Machine Code Computer Architecture (memory, processor components, buses, addressibility) é Interfaces Three calculation sheets accompany the unit. For access to all the files send me a message with your e-mail address and I’ll register you for the Dropbox they’re stored in. Please leave feedback. G Reid

For ICT students A simple notes on data representation

SAMPLE KNOWLEDGE ORGANISER. GCSE Knowledge Organiser - DATA REPRESENTATION Try out the new knowledge organisers, this one is for Data Representation and contains a compressed version of what you need to know for the GCSE Computing exam. Useful for last minute revision, support for class activities or homework or great for some exam preparation in the lead up to exams. Can be used by teachers too - feel free to print for your class. If you like this, please see my bundle for sale which contains all topics for the OCR GCSE Computing exam. Happy Revising!