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KS4 Curriculum Guide - Year 11 Computer Science
Term 1Binary and Hexadecimal 
In this unit students will learn how data is represented by the computer systems and why the binary systems is essential for computer processing. Students will learnt how to convert binary into denary and be able to carry out addition, subtraction, multiplication and division on binary numbers. Students will learn why hexadecimal numbers are used and how to convert between binary, denary and hexadecimal. Students will also learn about binary representation of characters, images and audio and how file compression reduces files.
Assessment: Students will sit a written End of Unit assessment. This topic is part of Unit 2. Unit 2 is 40% of the whole qualification and is a 1 hour 30 minute written examination.Key Words and Terms
 
Term 1Computer Systems (Hardware and Software) and Networks,    
Students will be able to explain what is meant by different types of computer systems and describe the structure of CPU and functions of components. They will understand the FDE cycle and the need to multiple cores, cache and virtual memory. Students will learn about systems software, operating systems and utility software. Students will learnt about different types of computer networks for different purposes and the functions of hardware required to connect computers. They will learn the differences between client servers and peer-to-peer networks, how data is transmitted across networks and the use of protocols to ensure integrity of data transmitted.
Assessment: Students will sit a written End of Unit assessment. This topic is part of Unit 1. Unit 1 is 40% of the whole qualification and is a 1 hour 30 minute written examination.Key Words and Terms
 
Term 1Systems Security   
Students will be able to threats posed to networks and describe different strategies used by criminals to attack computer networks and how these threats can be identified prevented and combatted using network policies..
Assessment: Students will sit a written End of Unit assessment. This topic is part of Unit 1. Unit 1 is 40% of the whole qualification and is a 1 hour 30 minute written examination.Key Words and Terms
 
Term 1 and Term 2Ethical, Legal, Cultural and Environmental Concerns   
In this unit, students will learn about impact of development of computer science technologies and be able to discuss environmental, ethical, legal and cultural issues. Students will also be able to describe the legislation relevant to computer science and the issues of data collection and privacy.
Assessment: Students will sit a written End of Unit assessment. This topic is part of Unit 1. Unit 1 is 40% of the whole qualification and is a 1 hour 30 minute written examination.Key Words and Terms
 
Term 3Programming Project (NEA)   
Start Date Monday 16th October 2017 Deadline Friday 8th December 2017 Non-Examined Assessment (NEA) is worth 20% of the overall grade and consists of a Programming Project. OCR issue three assessment tasks at the start of Year 11. NEA must take place under supervision of the teacher and there are strict rules in place. Students are expected to create suitable algorithms that willprovide a solution to the problems identified in the task. They must then code their solution, producing a development diary to show progress. Finally student must test and evaluate the solution. Students are provided with the mark scheme and a bank of resources to support. No Internet access is permitted during completion of the NEA.
Assessment: There are five aspects to assessment of NEA reflecting three Assessment Objectives. Programming Techniques - 12 marks - AO3 Analysis - 6 marks - AO2 and AO3 Design - 8 marks - AO1, AO2 and AO3 Development - 8 marks - AO1, AO2 and AO3 Testing and Evaluation - 6 marks - AO2 and AO3Key Words and Terms
 
Term 4 and Term 5Preparation for Examinations   
Students will prepare for examinations.
Assessment: Unit 1: Computer Systems 1 hour 30 minutes examination. Monday 14th May 2018 Unit 2: Computational thinking, algorithms and programming 1 hour 30 minute examination. Wednesday 16th May 2018Key Words and Terms
 

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