"Basic Elements of Maps" PPT courseware

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"Basic Elements of Maps" PPT courseware

Part One: Learning Objectives

Remember the three elements of a map

If you know the calculation formula of scale, you can measure the distance between two places on the map. Understand the three representations of scales and be able to convert them.

Know the basic methods of identifying directions and learn to identify directions on different maps. Ability to use pointers proficiently.

Be familiar with legends and annotations and be able to identify common legends and annotations on maps.

In order to introduce his school to his relatives and friends, Xiao Ming drew a campus floor plan. Using this floor plan, can you tell everyone: Which direction does the school gate face? Where is the teaching building located? How far is the flagpole from the school gate? What are the problems with the map drawn by Xiao Ming? How should it be modified?

think

What are the differences between the two campus floor plans drawn by Xiao Ming?

With the help of his teacher, Xiao Ming redrawn a campus floor plan through field measurements. Text color symbols are used to represent different geographical things, and scale legends and annotations are attached as well as directional signs.

PPT on basic map elements, part 2: using maps to identify directions in the wild

1. Use stars to identify direction:

(1) Identify the direction according to the sun:

1. Directly use the sun to identify the direction

The direction in which the sun rises in the east and sets in the west

2. Based on the shadow of ground objects

For mid-to-high latitudes in the Northern Hemisphere, the sun is located in the southern sky most of the day, and the shadow of an object always faces north (northwest in the morning, north at noon, and northeast in the afternoon). Therefore, the shadow of ground objects can be used to identify the direction. .

3. With the help of a watch: In the northern hemisphere, point the hour hand in the direction of the sun. Imagine a line between it and 12 o'clock. The direction it points to is south.

(ii) Find Polaris according to the constellation Ursa Major:

1. Polaris indicates the direction of true north

2. The altitude of Polaris = local latitude

3. Method: The connection between the Beidou Seven Stars from Tianxuan to Tianshu is extended 5 times

2. Identify the direction based on terrain and features:

1. Differences in snow melting speed:

Northern Hemisphere: Melts slower towards the north than towards the south

2. Plant branches and leaves:

Sunny: lush

Back sun: There is often moss on the tree trunks

3. Tree rings: The spacing of sun-facing annual rings is larger.

my country's northern forest area: the distance between annual rings is larger on the south side

4. House orientation: Most houses in the northern hemisphere face north and south.

Basic map elements PPT, the third part: summary and summary

Three elements of a map

1. Scale

1. Scale bar = distance on the map/actual distance

2. Expression method: line segment type; digital type; text type

2. Direction: Three ways to identify direction

1. Use pointers to interpret

2. Interpret using Jingwei.com

3. Directional beacons and latitude and longitude grids usually use "up north, down south, left west, right east" to determine the direction.

3. Legends and Notes

Commonly used legend symbols have unified regulations, so be familiar with them

Keywords: Business Planet version seventh grade geography PPT courseware free download, basic map elements PPT download, .PPT format;

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"Basic Elements of Maps" PPT courseware download:

"Basic Elements of Maps" PPT courseware download Part 1: Introduction of new lessons Riddle guessing There is not an inch of soil in the mountains, and there is not even half an acre of land in the flatlands. There is no water all over the world, and all the countries in the world are in front of us. ... ... ... Basic map elements PPT, the second part of the content:..

"Basic Elements of Maps" PPT:

The first part of the "Basic Elements of Maps" PPT: Introducing a new lesson and students guessing riddles: There is not an inch of soil in the mountains, not half an acre of field in the flatlands, there is no water in the five continents and seas, and all parts of the world are in front of you. Answer: Map. What is a map? A map is a place that uses various symbols...

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Update Time: 2024-11-21

This template belongs to Geography courseware Business Planet Edition 7th Grade Geography Volume 1 industry PPT template

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