Western Normal University Edition First Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 1
People's Education Press First Grade Mathematics Volume 1
People's Education Press Second Grade Mathematics Volume 1
Beijing Normal University Edition Seventh Grade Mathematics Volume 2
People's Education Press Third Grade Mathematics Volume 1
Beijing Normal University Edition Eighth Grade Mathematics Volume 1
Qingdao Edition Seventh Grade Mathematics Volume 1
Hebei Education Edition Third Grade Mathematics Volume 1
Beijing Normal University Edition Fifth Grade Mathematics Volume 1
Hebei Education Edition Seventh Grade Mathematics Volume 2
People's Education Press First Grade Mathematics Volume 2
People's Education High School Mathematics Edition B Compulsory Course 2
Qingdao Edition Seventh Grade Mathematics Volume 2
Hebei Education Edition Fourth Grade Mathematics Volume 2
Beijing Normal University Edition Fifth Grade Mathematics Volume 2
Category | Format | Size |
---|---|---|
Western Normal University Edition Sixth Grade Mathematics Volume 1 | pptx | 6 MB |
Description
"Scale" Graphic transformation and position determination PPT courseware 2
Test you: The actual distance from Nanjing to Beijing is 900 kilometers. An ant crawled from Nanjing to Beijing in less than 1 minute. Do you know what happened?
On a map, the straight-line distance from Guangzhou to Beijing was measured to be 32 centimeters. A teacher flew from Guangzhou to Beijing for a meeting, but it took 2 hours. What happened?
The ratio of the distance on the picture to the actual distance is called the scale of the picture.
Distance on the map � actual distance = scale
Distance on the map/actual distance = scale
do you know?
Scales expressed in numerical form such as 1:6000000, 1:100, 1:200, 1/6000000, 1/100, etc. are called numerical scales
Characteristics of scale
A scale is different from a general ruler in that it is a ratio without a unit of measurement;
The units of distance on the map and actual distance are the same;
The scale on the map is usually written as a ratio of the previous term being 1;
(1) Basic exercises
1. Measure the length of Xiaoxiao’s bedroom in the floor plan ( ) cm and the width ( ) cm.
The actual length of Xiaoxiao's bedroom is ( ) meters, the width is ( ) meters, and the area is ( ) square meters.
2. What is the total area of Xiaoxiao’s house in square meters?
Actual distance = distance on the map ÷ scale
1. On a map with a scale of 1:2000, a distance of 1 cm on the map represents the actual distance ( ) meters.
2. On a map with a scale of 1:250000, a distance of 1 centimeter on the map represents the actual distance ( ) kilometers.
3. On a map with a scale of 1:4000000, the distance on the map is ( ) the actual distance, and the actual distance is ( ) times the distance on the map.
Multiple choice questions:
(1) Use 10 centimeters to represent the actual distance of 9 kilometers. The scale of this picture is ( ).
A 1:900000 B 1:90000 C 1:900
(2) 1:240000000 means 1 centimeter on the picture, but it is actually ( ) kilometers.
A 24 B 240 C 2400
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For more information about the "Transformation and Determination of Position of Scale Bar Graphics" PPT courseware, please click the Transformation and Determination of Position of Scale Bar PPT Graphics ppt tag.
"Understanding the Scale" Scale PPT courseware:
"Understanding the Scale" Scale PPT Courseware Teaching Objectives 1. Combined with specific examples, experience the process of drawing according to 1:1 and reducing the drawing according to a certain ratio. 2. Understand the meaning of scale and be able to draw simple diagrams according to scale. 3. Actively participate in operational activities,...
"Line Segment Scale" Scale PPT courseware:
"Line Segment Scale" Scale PPT Courseware Teaching Objectives 1. Combined with specific examples, experience the process of understanding the line segment scale and determining the direction and position of objects. 2. Able to find the actual distance based on the length of the line segment on the picture and the line segment scale, and determine the position and direction of the object..
"Application of Scale" Scale PPT Courseware 3:
"Application of Scale" Scale PPT Courseware 3 Teaching Objectives 1. Experience the process of observing the distribution diagram of zoo attractions and designing a tour route. 2. Be able to solve practical problems in life based on schematic diagrams and scales, and be able to explain the rationality of the design route. 3. In...
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Update Time: 2024-11-16
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