Learning Objective:Learning Objective:To be able to use four and six figure grid references To be able to use four and six figure grid references To be able to identify OS map symbolsTo be able to identify OS map symbolsTitle:Title: What are Ordnance Survey maps?What are Ordnance Survey maps?

Lesson Starter: group the words below into categories. Words can go into more than one group. Come up with a heading for each group

Europe Europe Dollar Dollar North pointNorth point Rome Rome England England

Forestry Forestry Key Key Paris Paris TitleTitle FarmingFarming

Spain Spain AsiaAsia Fishing Fishing North North AmericaAmerica AfricaAfrica

London London Pound Pound SymbolsSymbols EuroEuro FranceFrance

Introduction to OS mapsIntroduction to OS maps

What is an OS map?

How do I use an OS map?

How is an OS map different to an Atlas?

Comparing an OS map with an AtlasComparing an OS map with an Atlas

Copy and complete the table below to show the Copy and complete the table below to show the similarities and differences between an atlas and an OS similarities and differences between an atlas and an OS map. Remember to use the language of comparison e.g. map. Remember to use the language of comparison e.g. however, whereas, on the other hand however, whereas, on the other hand

Similarities between an OS Similarities between an OS map and an Atlasmap and an Atlas

Differences between and OS Differences between and OS map and an Atlas map and an Atlas

e.g. An atlas is a book of maps e.g. An atlas is a book of maps whereas an OS map is usually whereas an OS map is usually one single mapone single map

Four Figure Grid ReferencesFour Figure Grid References

In which grid square is the symbol?

Activity 1-4 Four Figure grid references - Hull

Symbols on OS mapsSymbols on OS maps

Scale Scale You can measure the size of a place from a You can measure the size of a place from a

map by using the map scale. The scale is map by using the map scale. The scale is written as a figure called a representative written as a figure called a representative fraction (RF). For example, a RF of 1:50 000 fraction (RF). For example, a RF of 1:50 000 shows that one unit on the map represents shows that one unit on the map represents 50 000 of the same units on the ground. 50 000 of the same units on the ground.

5 cm on a ruler on a 1:50 000 scale map would 5 cm on a ruler on a 1:50 000 scale map would be: be:

5cm x 50 000 (map scale) = 250 000cm = 5cm x 50 000 (map scale) = 250 000cm = 2 500 metres = 2.5 km 2 500 metres = 2.5 km

Six Figure Grid ReferencesSix Figure Grid References

Along the edge of a piece of scrap paper draw a line the length of the grid square - then divide it by ten -

number as below

027_ _ _ 027107