Unit at a glance
4 lessons, 180 minutes of teaching
Scheme of work
The lessons in order
| Ref | Lesson pack | Structure | Worksheet | Quiz | Lab tab |
|---|---|---|---|---|---|
| 13.1 | User-defined data types Built-in types such as INTEGER and STRING cannot describe everything a program needs. | Mix-Pair-Share | 6 Q, 17 marks | 6 MCQ | none |
| 13.2 | File organisation, access and hashing How records are arranged in a file decides how quickly one can be found. | Jigsaw | 6 Q, 22 marks | 6 MCQ | tab 5 |
| 13.3 | Floating-point binary representation A floating-point number is stored as a mantissa and an exponent, both in two's complement, just like scientific notation in binary. | Numbered Heads Together | 6 Q, 18 marks | 6 MCQ | tab 5 |
| 13.3 | Normalisation, range and precision A normalised floating-point number wastes no bits on leading zeros or ones, so it is as precise as the format allows and has only one representation. | Round Table | 6 Q, 19 marks | 6 MCQ | none |
Each pack holds the plan, worksheet and quiz for its lesson. Teach the rows in order; the lab tabs match the student lessons.
Also for this topic