Computer Science - Year 9

Hi all,

 

After your work on 1.5 Network Topologies, Protocols and Layers it is now time to proceed with 2.6 Data Representation  (see plan below).

 

Please email me your ‘Learning Grid’ so I can check your work on 1.5 Network Topologies, Protocols and Layers and provide you with feedback.

 

2.6    Data Representation

 

What should the learners be confident/able to do at the end of the session?

 

  • Define the units bit, nibble, byte, kilobyte, megabyte, gigabyte, terabyte, petabyte.

  • Know how data needs to be converted into a binary format to be processed by a computer.

  • Know how to convert positive denary whole numbers   (0-255) into 8 bit binary numbers and vice versa.

  • explain the use of binary codes to represent characters

  • explain the term character set

  • describe with examples (for example ASCII and Unicode) the relationship between the number of bits per character in a character set and the number of characters which can be represented.

  • Understand how a digital image is made up and be able to recognise the affect changing the resolution has on an image.

  • Understand how a computer displays coloured images using binary and rgb values.

  • Understand how sound is stored into binary values

  • Understand the factors that affect how sound is stored and how this affects the memory needed for storage. 

  • Understand and be able to explain why the factors affect memory storage and how this can be overcome through file compression.

  • Understand the need for compression.

  • Know the difference between lossy and lossless compression.

  • Analyse when lossy and lossless would be used.

 

 

 

Tasks

  1. Open the two files ‘learning grid’ (Word) and  GCSE Computer Science Revision Guide (pdf, password: zz2ghc4) from your home pc. Originals attached.

    • The GCSE Computer Science Revision Guide pdf file is a great starting point for all research as it contains notes on the entire course.

    • The learning grid covers, again, the whole course. You may have a copy of this in your 'My Documents' which may have some sections already completed - use this if you can access it. Otherwise use the one attached during lock down then you can send to your school email for uploading when normality returns.

  2.  To achieve the objectives for 2.6 Data Representation  use the revision guide to help you answer all the questions on this topic in the 'learning grid'.

  3.  I know it's tempting to copy and paste, however I would encourage you to edit your answers as the 'learning grid' is potentially a great revision resource if the information is short and concise!

I will check my emails everyday so don't hesitate to get in touch with any questions and I will update the 'online learning' section of Computer Science to reflect the weekly task.

 

Once you’ve answered all the questions on ‘Data Representation in your ‘Learning Grid’ please email it to me so I can check it and feedback to you.

Password for PDF: zz2ghc4

Hi all,

 

Here's my plan from Easter until the end of the Summer term:

 

 

I will re-teach everything from the end of Spring 1 (end of January) when we meet again!

 

The two columns represent our different lessons, as we sometimes alternated topics during a given week. So at this point we will proceed with '1.5 Network Topologies, Protocols and Layers'.

 

Objectives 

  1. Students will be able to identify a Star and Mesh Topology

  2. Students will be able to compare Advantages and Disadvantages of Wi-Fi and Ethernet

  3. Explain what encryption is 

  4. Know what layers are and their role 

  5. Be able to explain the role of each layer 

  6. Understand the concept of Packet Switching 

Tasks

  1. Save the two attached files

  2. The revision file is a great starting point for all research as its notes on the entire course. Password is: zz2ghc4

  3.  The learning grid covers, again, the whole course. You may have a copy of this in your 'My Documents' which may have some sections already completed - use this if you can access it. Otherwise use the one attached during lock down then you can send to your school email for uploading when normality returns.

  4.  To achieve the objectives for '1.5 Network Topologies, Protocols and Layers' use the revision guide to help you answer all the questions on this topic in the 'learning grid'.

  5.  I know it's tempting to copy and paste, however I would encourage you to edit your answers as the 'learning grid' is potentially a great revision resource if the information is short and concise!

I will check my emails everyday so don't hesitate to get in touch with any questions and I will update the 'online learning' section of Computer Science to reflect the weekly task.

 

Any problems let me know.


 

Stay safe and healthy


 

Mr Juckes

Designated Safeguarding Lead Officer Mrs E Smith - Assistant Principal 

Deputy Designated Safeguarding Lead  Mrs K Gibson

Mr A Calderwood

Safeguarding trained and SENDCo 

Mr I Lowcock

Eggbuckland Community College 

Westcott Close, Eggbuckland, 

Plymouth, PL6 5YB

Phone: 01752 779061

email:

mailbox@eggbuckland.com

If you have any queries please contact the School Administrators

Mrs A Pillage

Miss J Rogers

Mrs S Pain

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