Mastering Four-Figure Grid References

Active learning works for four-figure grid references because students need to physically navigate maps to develop spatial awareness. Moving from textbook exercises to hands-on tasks builds confidence in reading coordinates and reduces confusion between eastings and northings through repeated, purposeful practice.

• Year 6
• Geography
• 4 activities
• 20 min–40 min

Learning Objectives

1. Predict the precise location of a named feature on an Ordnance Survey map given its four-figure grid reference.
2. Compare the specificity of a four-figure grid reference to a descriptive location, such as 'near the church'.
3. Justify the necessity of using four-figure grid references for accurate fieldwork and navigation tasks.
4. Calculate the center point of a 1km square using its four-figure grid reference.

Think-Pair-Share

⏱ 35 min·Small Groups

Treasure Hunt: Grid Reference Rally

Distribute OS map excerpts to small groups. Provide 10 clues with four-figure grid references for features like churches or woods. Groups locate each, sketch the feature, and justify why the reference is accurate. Debrief by sharing one challenging find.

Prepare & details

Predict the location of a feature given its four-figure grid reference.

Facilitation Tip: During the Treasure Hunt, circulate with a clipboard to listen for students calling references aloud with correct order (eastings first, then northings) to catch misconceptions early.

Setup: Standard classroom seating; students turn to a neighbor

Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs

• Understand
• Apply
• Analyze
• Self-Awareness
• Relationship Skills

Think-Pair-Share

⏱ 25 min·Pairs

Pairs Relay: Coordinate Calling

Pair students with identical OS maps. One partner calls a four-figure grid reference; the other marks and names the feature. Switch roles after five turns, then compare maps for accuracy. Extend by adding prediction challenges.

Prepare & details

Compare the accuracy of four-figure grid references with general descriptions.

Facilitation Tip: For the Pairs Relay, position yourself at the finish line to observe how students read grid references from the map and call them to their partner, ensuring they point to the correct square.

Setup: Standard classroom seating; students turn to a neighbor

Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs

• Understand
• Apply
• Analyze
• Self-Awareness
• Relationship Skills

Think-Pair-Share

⏱ 40 min·Whole Class

Whole Class: Reference Creation Game

Project a blank OS grid square. Students suggest features; teacher assigns references. Class votes on best placements, then verifies with real maps. Record class map with annotations for gallery walk.

Prepare & details

Justify the use of grid references for precise location identification.

Facilitation Tip: In the Reference Creation Game, walk around with blank map grids and ask students to justify their chosen references to check their understanding of how squares are defined by grid lines.

Setup: Standard classroom seating; students turn to a neighbor

Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs

• Understand
• Apply
• Analyze
• Self-Awareness
• Relationship Skills

Think-Pair-Share

⏱ 20 min·Individual

Individual: Precision Match-Up

Give students maps and cards with descriptions versus four-figure references. Match pairs, then explain why references outperform descriptions. Follow with self-created reference for a chosen feature.

Prepare & details

Predict the location of a feature given its four-figure grid reference.

Setup: Standard classroom seating; students turn to a neighbor

Materials: Discussion prompt (projected or printed), Optional: recording sheet for pairs

• Understand
• Apply
• Analyze
• Self-Awareness
• Relationship Skills

Teaching This Topic

Teach four-figure grid references by starting with physical movement—have students walk to labeled grid squares on the playground or school field. Avoid abstract explanations until they’ve experienced the practical need for precision. Use peer teaching, where students correct each other’s references during relays, as research shows peer correction strengthens retention. Keep demonstrations short and focused on the ‘why’ before students practice.

What to Expect

By the end of these activities, students will confidently read four-figure grid references, explain why order matters, and justify their use over vague descriptions. They will also recognize that a reference identifies a 1km square, not a single point, preparing them for more precise six-figure references.

Watch Out for These Misconceptions

Common Misconception

During Pairs Relay: Coordinate Calling, watch for students calling northings before eastings or mixing up the order.

What to Teach Instead

Remind students to chant ‘across then up’ while pointing to the grid lines. If heard out of order, have the pair redo the call immediately with peer modeling.

Common Misconception

During Treasure Hunt: Grid Reference Rally, watch for students treating the reference as a single point rather than a 1km square.

What to Teach Instead

Ask teams to list two or three features within their square, then discuss why multiple features fit. Use this to transition to the idea of needing six-figure precision for exact locations.

Common Misconception

During Reference Creation Game, watch for students assuming grid lines start only at the map’s bottom-left corner.

What to Teach Instead

Provide a full OS map sheet and have students locate the same numbered grid line on different parts of the map to see that numbers repeat across the sheet.

Assessment Ideas

Quick Check

After Treasure Hunt: Grid Reference Rally, give students a map section and a list of references they encountered. Ask them to circle the correct 1km square for each and name one feature inside, collecting these to check for accuracy and understanding of square identification.

Discussion Prompt

During Pairs Relay: Coordinate Calling, pause mid-activity and present two descriptions for a feature: one using a four-figure reference and one vague description. Ask students which is more precise and why, then have them justify their answers based on their relay experiences.

Exit Ticket

After Reference Creation Game, give each student a blank grid reference card. Ask them to draw the 1km square for a reference you provide, label it correctly, and write one sentence explaining how they found it, to assess their grasp of grid line numbering.

Extensions & Scaffolding

• Challenge students who finish early to create a mini-orienteering course for peers using only four-figure references, with at least three features per square.
• For students who struggle, provide laminated map sections with grid lines already numbered to reduce cognitive load during the Treasure Hunt.
• Deeper exploration: Introduce a comparison between four-figure and six-figure references by having students identify why some features require more precision (e.g., a footpath junction vs. a large lake).

Key Vocabulary

Four-figure grid reference	A system of two numbers, each representing two digits, used to locate a 1km square on an Ordnance Survey map. The first pair indicates the easting and the second pair indicates the northing.
Easting	The horizontal coordinate on a map, measured from west to east. The first two digits of a four-figure grid reference represent the easting.
Northing	The vertical coordinate on a map, measured from south to north. The last two digits of a four-figure grid reference represent the northing.
1km square	A specific square area on an Ordnance Survey map, measuring one kilometre by one kilometre, identified by its unique four-figure grid reference.