Believe it or not, there was a time before computers could 'talk' to each other and by 'talk' I mean transmit binary signals through wires or through the air. The earliest form of digital communication (with two 'state') was the Telegraph, using Morse Code (you know, the dot-dash thing) which sent it's first message in 1844 - that's 127 years before the first email was sent.



Collaboration (2)

understand computer networks including the internet; how they can provide multiple services, such as the world wide web; and the opportunities they offer for communication and collaboration
Methods of collaboration using technology (voice telephones, SMS, email, chat rooms, forums, bulletin boards, VoIP, video conferencing, webcams, blogs, social networking)
Email - sending, message text, subject line, appropriate use
Email - replying / forwarding/ multiple recipients
Email code of conduct / appropriatness of subject and message / etiquette (business) / formality
email attachments
Diary management software - creating appointments, meetings, tasks
Document collaboration - documents in a shared location, local network share, cloud collaboration (padlet, drive)
Communication (email, collaboration)
Padlet

Connecting computers together (2)

Why connect computers? Advantages and disadvantages (SoDaSaW grid)
The concept of data transmission (video of data along a rope)
Components Connectivity devices (hubs, routers, switches)
Common Protocols (TCP/IP, http, https, ftp)
A network as a collection of computers working together - WAN and LAN
Star networks - let's build one! Demonstration of building a network using a switch and laptops / RPi
Comparing star, bus and ring networks - making networks with strings ...
Computers can be connected using a range of technologies (network cables, telephone lines, wifi, bluetooth, RFID, NFC, infrared, mobile signals) - assess suitability for purpose.

The Internet VS the World Wide Web (1)

Undersea Cable Map https://www.submarinecablemap.com/ plus images of cross section
Video of laying undersea cable.
Translatlantic Cable - History link?
ARPANET / Galactic Internet
The Internet is a collection of computers connected together sharing the same way of communicating. The internet is not the web, and the web is not the internet.
The world wide web contains a lot of information
Structure of the web - hyperlinks
Relationship between web browser, servers, websites, pages
WWW vs the Internet
The structure of the web

Encryption and compression - safe and small communication (2)

Need for compression to save bandwidth
Practical compression / decompression
Run length encoding
Encryption (end to end), symmetric / assymetric and some practical
compression - data vs sound / video
zip compression and handling archive files

Advanced searching using Google or Bing?
https://www.commonsense.org/education/lesson/strategic-searching-6-8

DL Focus : Presentation / Google Presentation - online collaboration
Modify existing presentation
Create new documents
Using document templates
Creating / replicating screen layout
Design rules / good practice
Selecting appropriate text and graphics
Editing documents using insert, delete, cut, copy, paste, paste special
Managing graphics (cut, copy, paste, crop, resize)
Using tables
simple animation effects - suitability
Master slides / layouts
Hyperlinks
Slide transitions
Organising slides
Embedding content
Printing (full slide, handout, print options)



Programming/Algorithm Focus
Scratch Coding / CS First with Google (6)
BBC Microbits (6)