Over 30 exam questions with PowerPoint slides and answers for the teacher to work through for the Computer Systems part of the OCR AS Level Computer Science exam. These are past questions and the answers have been broken down into smaller parts to help students answer it. You can email these to your students alternatively you can go through the answers with your pupils. There are questions on the following topics within these slides: - Database Ethics Data transmission Handshake DBMS RISC/CISC Client Server Model HTML CSS SQL Binary / Unsigned Binary RAM/ROM Network Models Real-time

These questions will help your students with answer exam style questions on legislation. 8 Pages including an activity sheet and some exam questions I would include on an enable table in the corner of the room. Usually these questions are broken down into essay style questions. There is advice on how to answer these as well as past exam questions. There are some simplified questions for students who will be working towards a 5-7 but then I've included some top end work. Acts covered include: - * Computer Misuse Act * Freedom of information Act * Communications Act * Data Protection Act * Creative Commons * Copyright Designs and Patents Act

This bundle includes lessons on the following areas of the 9-1 computer science curriculum *Legal Issues *Computer Misuse Act *Freedom of Information Act *Communications Act *Data Protection Act *Copyright Designs and Patents Act *Creative commons *Open source / Proprietary Software *Ethical and cultural issues *Censorship and the internet *Computers in the workforce *Automated decision making *Privacy Issues *Computer technology used to analyse personal information *Artificial Intelligence

These 7 slides introduce artificial intelligence to students. It includes two basic worksheets with answers and helps the students to get a little deeper in their thought behind how artificial intelligence learns.

These 8 slides argue for and against automated decision making. The slides also comment on privacy through monitoring. We discuss items such as CCTV and also go into detail about how personal information is now being analysed.

There are 13 slides here discussing privacy concerns with the internet. The slides get students to have deeper thinking when discussing. It explains arguments for and against censorship and it gets them to also understand how the internet has made it less likely for us to hide personal information. There is some think time and discussion time build into these slides.

A brief PowerPoint showing open and closed source software. There are 7 slides. They give examples of the software and contrast the two explaining the difference between proprietary software and open source software.

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.

1.3.2 - Characteristics of networks and the importance of protocols and standards. This lesson is the first part to two lessons on section 1.3.2 of the OCR syllabus. The lesson starts off with some questioning on the CPU which was the topic I covered with students in their recent lesson. Check the PowerPoint notes. Slide break down: - Slide 1 - 4 - We’re learning to explain the characteristics of Networks and the importance of protocols and standards - Learning objective and questions. Asks students what a network is. Slide 5 - A video explaining why we need networks. Slide 6-8 - Explains what is meant by a network. Explains what a LAN and WAN is and uses key points from past computing exam papers to give students what the mark scheme would look for. Slide 9-13 - Looks at different transmission media. Gets students to understand copper and fibre optic. Slide 14 Students share what they did for homework. Slide 15 - 25 Explains topologies and includes a video. Their are unplugged activities which get the students to become the network. Final Activity included

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.

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.

This lesson works on the assumption that students have already been introduced to the Arithmetic Logic unit and section (a) of the 1.1.1 spec. This lesson covers: - (b) – The fetch-decode-execute cycle, including its effect on registers. (c) – The factors affecting the performance of the CPU, clock speed, number of cores, cache. It includes some starter exam questions around the registers and answers are included in the presentation. Students will be expected to answer these questions. There is a research based task at the end which gets them to research other factors which have an impact on the CPU performance.

This is an assessment with answers including the structure and function of the processor. It includes: - (a) – The Arithmetic and Logic Unit; ALU, Control Unit and Registers (Program Counter; PC, Accumulator; ACC, Memory Address Register; MAR, Memory Data Register; MDR, Current Instruction Register; CIR). Buses: data, address and control: How this relates to assembly language programs. (b) – The fetch-decode-execute cycle, including its effect on registers. (c) – The factors affecting the performance of the CPU, clock speed, number of cores, cache. (d) – Von Neumann, Harvard and contemporary processor architecture.

A-Level Computer Science - Thinking ahead 2.1.2 - OCR This lesson focusses on a number of areas for the OCR A-Level Computer Science spec. a) Identify the inputs and outputs for a given situation. b) Determine the preconditions for devising a solution to a problem. c) The nature, benefits and drawbacks of caching. d) The need for reusable program components. There are 3 activities which get students thinking about making the solution to the problem and the advantages and disadvantages for each of these are discussed. There are some questions and answers and also some resources from the OCR repository to support the learning in this. There is a video attached which get students to think about 'thinking ahead' and needing specific items before they use the code. Contents: * Lesson Plan * Lesson PowerPoint's * 2 Sheets to cut out and students to use

This resources breaks down to students how to think abstractly. It includes answers to the questions discussed on the PowerPoint slides. It also includes a step by step guide to breaking down problems. The students will have a number of activities which require them to solve problems. There are attached videos which have been taken from YouTube resources which should help students understand how to think abstractly in more depth. I have attached a link to the OCR PDF specimen paper and I have pointed to questions relevant to this discussion. The lesson plan helps break the task up and includes answers to the PowerPoint.

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.

I have used the last 4-5 years of A-Level computing questions to find questions on floating point binary. I have compiled them in a 50 mark test which will test the students on their ability to do the following: - - convert from denary to binary - convert from denary to floating point binary - convert from floating point binary to denary - normalise floating point binary - compare floating point binary numbers to check accuracy Answer sheet has been provided against the spec so that you can see where it's possible to gain marks. I used this against the current grade boundaries to assess where they're currently at.

A series of 12 slides going over questions from the A-Level computer science spec with marks that you would give students. The idea of this is that you can have a lesson where you break down the terms that the exam board would be looking for. They include the marks and show students the type of thing that would be required for an answer. This resource helped my year 12 students which is why I'm sharing it here.

This Powerpoint covers 1.4.1 (g) - Representation and normalisation of floating point numbers in binary and 1.4.1 (h) - Floating point arithmetic, positive and negative numbers, addition and subtraction. This presentation shows you step by step how to convert two numbers into floating point binary and it shows you the steps to do it. There are 5 questions at the end which will test your understanding and will give you the answers. There is an example exam question for adding floating point binary numbers and it's broken down to show how to get the marks and how to get there. The PowerPoint is plain white and isn't exactly appealing to the eyes but it shows you clearly what happens during each point.

This is a pack of resources which are available to purchase individually. In this pack are some worksheets which break down data types in the OCR A-Level computer science. This is for section 1.4.1 of the Data types, data structures and algorithms. Included in this pack is: * Binary addition * Binary subtraction * Fixed point binary * Floating point binary * Normalisation of floating point binary * Bitwise operators All sheets come with answers for your own ease of use