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!["Understanding the Scale" Scale PPT courseware](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/58a08bcb-7a9e-4e20-93ed-1fe8cc5aa8ff.webp)
Category | Format | Size |
---|---|---|
Hebei Education Edition Sixth Grade Mathematics Volume 1 | pptx | 6 MB |
Description
"Understanding the Scale" Scale PPT courseware
teaching objectives
1. Combined with specific examples, go through the process of drawing at 1:1 and reducing the drawing at 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, feel the role of proportional drawing, and gain a successful learning experience.
Talk about it
Does the business card they designed meet the requirements of Big Head Frog?
If a figure drawn like this is the same as the required size, we say that such a figure is drawn on a 1:1 basis.
Like the big-headed frog business card, there is a certain ratio between the distance on the picture and the actual distance. This ratio is the scale of the picture.
Draw a diagram of a picture frame that is 60 cm long and 45 cm wide.
Is it okay if I draw it on the homework book at a ratio of 1:1? Why?
If the length and width of the frame were reduced to 1/15 of their original size, would you be able to draw it? Give it a try!
Talk about it
How many centimeters does 1 centimeter in the picture represent in actual length? What is the scale of the drawing?
1 cm in the picture represents the actual length of 15 cm, which is drawn at 1:15. Let's say the scale of this picture is 1:15.
In conclusion
1. When drawing a picture, you can first determine the scale of the picture and draw the corresponding graphics according to different scales.
2. For the same figure, if the scale is different, the size of the drawn figure is different, but the shape is the same.
give it a try
Measure the length and width of the blackboard and draw a diagram of it at a scale of 1:20.
long:_________
Width:_________
practice
1. Select the desk or stool surface, draw their schematic diagram, and fill in the activity report.
2. Find a small picture, first draw its length and width, and then draw a schematic diagram of the shape of the picture at a scale of 2:1.
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File Info
Update Time: 2024-09-05
This template belongs to Mathematics courseware Hebei Education Edition Sixth Grade Mathematics Volume 1 industry PPT template
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!["Understanding the Scale" Scale PPT courseware](http://daogebangong.oss-cn-beijing.aliyuncs.com/ppt/preview/1/b7e45b7a-ce92-49d9-b848-bbda778f8915.webp)