Unit at a glance
10 lessons, 450 minutes of teaching
Scheme of work
The lessons in order
| Ref | Lesson pack | Structure | Worksheet | Quiz | Lab tab |
|---|---|---|---|---|---|
| 1.1 | Why computers use binary: binary and denary A computer is built from billions of tiny switches that are either off or on. | Round Table | 6 Q, 13 marks | 6 MCQ | tab 1 |
| 1.1 | Hexadecimal and where it is used Long strings of 0s and 1s are hard for people to read and easy to copy wrongly. | Rally Coach | 6 Q, 14 marks | 6 MCQ | tab 2 |
| 1.1 | Binary addition and overflow Binary addition works just like the column addition you learned for denary, only the carries come much sooner. | Cooperative Concept Mapping | 6 Q, 14 marks | 6 MCQ | tab 3 |
| 1.1 | Logical binary shifts Moving every bit one place to the left doubles a binary number; moving it one place to the right halves it. | Think-Pair-Share | 6 Q, 14 marks | 6 MCQ | tab 4 |
| 1.1 | Two's complement for negative numbers A register has no space for a minus sign, so the computer has to show negative numbers with bits alone. | Rally Coach | 6 Q, 13 marks | 6 MCQ | tab 5 |
| 1.2 | Representing text: ASCII and Unicode When you press a key, the computer does not store a letter: it stores a number, written in binary. | Jigsaw | 6 Q, 13 marks | 6 MCQ | tab 1 |
| 1.2 | Representing sound: sample rate and resolution A sound wave changes smoothly and continuously, but a computer can only store separate binary numbers. | Corners | 6 Q, 14 marks | 6 MCQ | tab 2 |
| 1.2 | Representing images: resolution and colour depth Zoom far enough into any digital photo and it breaks up into tiny squares of colour called pixels. | Frayer Model | 6 Q, 12 marks | 6 MCQ | tab 3 |
| 1.3 | Measuring data storage and calculating file sizes Storage is measured in bits and bytes, and in units that each hold 1024 of the one before. | Numbered Heads Together | 6 Q, 14 marks | 6 MCQ | tab 4 |
| 1.3 | Lossy and lossless compression Photos, songs and videos are big, and big files are slow to send and fill up storage. | Anticipation / Reaction Guide | 6 Q, 13 marks | 6 MCQ | tab 5 |
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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