Geometry
Geometry in Year 1 is really just three questions in disguise: how much surface does a solid have, how much space is inside it, and how do you shrink or describe a real distance accurately on paper or a compass? Every question in this chapter — cubes, prisms, cylinders, maps, bearings, unit conversions, composite shapes — is one of those three questions wearing a different costume. Spot which one, and the formula follows.
Overview: The Big Picture of Geometry
This chapter is about measuring shapes precisely enough that a real job could be done from your numbers — cutting the right amount of wrapping paper, ordering the right amount of concrete, or telling a ship exactly which direction to sail. That's why examiners keep asking you to identify a real job that needs this maths (packaging designer, architect, cartographer) rather than just crunching numbers in isolation.
- Surface area and volume both start from the same solids (cubes, cuboids, prisms, cylinders) but answer opposite questions — outside skin vs inside space.
- Scale drawings and bearings are about representing real-world distance and direction accurately at a smaller size.
- Unit conversion is the glue holding all of it together — get it wrong and a correct method still gives a wrong final answer.
- Perimeter and area of 2D shapes underpin everything above: a prism's surface area is just several 2D areas added together.
The shape of the chapter
Command terms this chapter loves
| Command term | What it demands | AO | Mark-earning move |
|---|---|---|---|
| Identify | Give a specific value, name, or count — no explanation needed. | Knowing & Understanding | 1 mark for the correct fact stated; extra working or explanation is neither required nor rewarded. |
| State | Give a brief, precise fact or rule. | Knowing & Understanding | 1 mark for a clean, correct statement — vague or partial wording forfeits the mark. |
| Calculate | Produce a numerical answer, showing the method used to get there. | Applying & Reasoning | Marks split between correct substitution/method and correct final value with units — a right answer with no working can still lose method marks if the answer itself is wrong. |
| Describe | Give a detailed account in full sentences, using any keywords the question specifies. | Communicating | For 2-mark 'describe' questions, examiners expect two separate ideas — restating the question in different words earns 0. |
| Explain | Give reasons or a cause-and-effect link, not just a description. | Applying & Reasoning | Must contain a 'because' — a correct fact with no reasoning attached only earns partial credit. |
Key point
Overview