OS Grid References and Location
Read Ordnance Survey evidence accurately before using location, direction and pattern in a geographical answer.
How to study National 5 Geography
Start from located evidence, identify the geographical process, develop each causal link and test management against the people and environments affected.
Core concepts
Concept 1
Four-figure references identify a grid square; six-figure references identify a more precise point within it.
Exam cue: Read along the eastings before moving up the northings.
Concept 2
Eastings are read before northings, using the lower-left corner of the square as the starting reference.
Exam cue: Use the key and name the mapped feature rather than guessing from its shape.
Concept 3
Map symbols, direction, settlement form and feature distribution must be supported with exact mapped evidence.
Exam cue: Support a pattern with named places, grid references or directional evidence.
Risk pitfalls and guardrails
Reversing eastings and northings.
Guardrail: Check the command word, option, scale, location, time period and whether the evidence supports every link in the answer.
Giving a grid square when a six-figure point is requested.
Guardrail: Check the command word, option, scale, location, time period and whether the evidence supports every link in the answer.
Describing a pattern without map evidence.
Guardrail: Check the command word, option, scale, location, time period and whether the evidence supports every link in the answer.
Memory anchors
Grid-reference order
Along the corridor: eastings first; up the stairs: northings second.
Four-figure reference
The easting and northing of the grid square’s lower-left corner.
Six-figure reference
Add tenths across the square and then tenths up the square.
Map key
Use the published symbol key before identifying a feature.
Distribution evidence
State the pattern and anchor it with places, directions or references.
Location precision
Match the evidence precision to the command: area, line or exact point.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
On an original grid map, Pine Hill lies in square 4267. Which is its four-figure reference?
A campsite is seven-tenths across square 3184 and two-tenths up. Which six-figure reference fits?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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