Unit at a glance
6 lessons, 270 minutes of teaching
Scheme of work
The lessons in order
| Ref | Lesson pack | Structure | Worksheet | Quiz | Lab tab |
|---|---|---|---|---|---|
| 2.1 | Packets and packet switching When you send a photo across the internet it does not travel as one big lump. | Jigsaw | 6 Q, 16 marks | 6 MCQ | tab 1 |
| 2.1 | Serial and parallel, simplex, half-duplex and full-duplex Data can travel one bit at a time down a single wire, or several bits at once down several wires. | Corners | 6 Q, 16 marks | 6 MCQ | tab 2 |
| 2.1 | The universal serial bus (USB) Keyboards, mice, printers, flash drives and phones all connect to a computer through the same kind of port. | Frayer Model | 6 Q, 13 marks | 6 MCQ | tab 2 |
| 2.2 | Parity checks, checksums and echo checks Electrical interference can flip a bit, lose one or add one while data travels. | Connect-Extend-Challenge | 6 Q, 17 marks | 6 MCQ | tab 3, tab 4 |
| 2.2 | Check digits and automatic repeat query (ARQ) A check digit catches mistakes when a person types a number or a scanner misreads a barcode. | Anticipation / Reaction Guide | 6 Q, 17 marks | 6 MCQ | tab 4, tab 5 |
| 2.3 | Symmetric and asymmetric encryption Anything sent across a network can be intercepted. | Cooperative Concept Mapping | 6 Q, 15 marks | 6 MCQ | tab 6 |
Each pack holds the plan, worksheet and quiz for its lesson. Teach the rows in order; the lab tabs match the student lessons.
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