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AREA & GRID REFERENCING AREA & GRID REFERENCING

AREA & GRID REFERENCING - PowerPoint Presentation

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Uploaded On 2023-10-04

AREA & GRID REFERENCING - PPT Presentation

SUCCESS CRITERIA To be able to apply 4 amp 6 figure grid references to find places on a map Lesson objectives To develop a greater understanding of how to read maps using area amp grid references ID: 1022621

figure grid reference area grid figure area reference references map numbers line refer find places amp bottom work divide

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1. AREA & GRID REFERENCINGSUCCESS CRITERIATo be able to apply 4 & 6 figure grid references to find places on a mapLesson objectives;To develop a greater understanding of how to read maps using area & grid references.To develop a greater understanding of how to be more accurate with locating places.

2. FINDING LOCATIONS ON A MAPMost maps use a system of numbers or letters or both around the borders to help us find places.You must go along the grid and then up to locate an area correctlyHandy hint: ‘go along the corridor, then up the stairs)The vertical lines are called EASTINGS as they divide up the map from west to eastThey increase in value as you travel east on a mapThe horizontal lines are called NORTHINGS as they divide up a map from south to northThey increase in value as you travel north on a mapEastings are always used and written first before northings

3. AREA REFERENCEA 4-figure map reference is an AREA reference (AR)It describes the general location of an area on the map The first two numbers of an area reference refers to the easting grid line and refer to the line on the left side of the grid sqaureeastings are numbered at the bottom or top of the mapThe second two numbers in an area reference refers to the northing grid line and refer to the line at the bottom of the gridNorthings are numbered along the side of the mapAn area reference is written without spaces or a comma, e.g. AR2334 (find it on the map)

4. AREA REFERENCECopy the shapes into your books and write down their 4-figure area reference.0405060708092324252627The golden rule‘Along the corridor and then up the stairs’

5. GRID REFERENCES6-figure grid references are more precise than a 4-figure area referenceGrid references are used to locate smaller, more specific locationsA 6-figure grid reference divides the grid square up into ten sections along the bottom and the sideThe first 3 numbers of a grid reference refer to the eastings To find the exact location, the first two numbers refer to the grid line and the third number is the specific space within the grid squareIf the grid line is below 10, you must put a zero in front to make it two numbers e.g. 09…and then add the third numberThe last 3 numbers of a grid reference refer to the northing grid lineSame applies as abovePRACTISE USING THIS MAP

6. 0405060708092324252627MORE PRACTISE – AR & GR REFERENCESFind the AR and GR for each symbol

7. Why do we use 6 figure grid references? Task; Complete the following sentence We use a 6 figure grid reference because ………………………………………………………………………………………………2) 6 figure grid references are better than 4 figure grid references because. ………………………………………………………………………………………………3) We work out 6 figure grid references by................To be able to recall how to work out 6 figure grid references and why they are important.

8. Practise…To be able to indentify how to work out six figure grid references

9. Which is the correct grid reference?1. The tunnel.313468 b) 3154682. The school323465 b)3234683. The lodge farm307454 b) 3014574. Fredley manor325449 b)3234475. Cowslip farm315459 b)312451To be able to apply six figure grid references to find places on a map