"Area of Combined Figures" Area of Polygons PPT Teaching Courseware Simple campus recruitment activity planning plan summary enterprise and institution recruitment publicity lecture PPT template is a general PPT template for business post competition provided by the manuscript PPT, simple campus recruitment activity planning plan summary enterprise and institution recruitment promotion Lecture PPT template, you can edit and modify the text and pictures in the source file by downloading the source file. If you want more exquisite business PPT templates, you can come to grid resource. Doug resource PPT, massive PPT template slide material download, we only make high-quality PPT templates!
| 文件名 如何下载使用 | 下载次数 | Download Points | 下载地址 |
|---|---|---|---|
| "Area of Combined Figu... | 7000次 | 0.00 | Free Download |
Tips: If you open the template and feel that it is not suitable for all your needs, you can search for related content "Area of Combined Figures" Area of Polygons PPT Teaching Courseware is enough.
How to use the Windows system template
Directly decompress the file and use it with office or wps
How to use the Mac system template
Directly decompress the file and use it Office or wps can be used
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view: Click to see
How to create a high-quality technological sense PPT? 4 ways to share the bottom of the box
Notice
Do not download in WeChat, Zhihu, QQ, built-in browsers, please use mobile browsers to download! If you are a mobile phone user, please download it on your computer!
1. The manuscript PPT is only for study and reference, please delete it 24 hours after downloading.
2. If the resource involves your legitimate rights and interests, delete it immediately.
3. Contact information: service@daogebangong.com
"Area of Combined Figures" Area of Polygons PPT Teaching Courseware, due to usage restrictions, it is only for personal study and reference use. For commercial use, please go to the relevant official website for authorization.
(Personal non-commercial use refers to the use of this font to complete the display of personal works, including but not limited to the design of personal papers, resumes, etc.)
Related reading
For more detailed PPT-related tutorials and font tutorials, you can view:Please click to see
Authoritative PPT Summary
"Area of Combined Figures" Area of Polygons PPT Teaching Courseware
Part One: Introduction to the topic
There are many combination graphics in life. Look at the picture above. What simple graphics are these combination graphics made of? How can we find their areas? Communicate in groups first, and then report back to the whole class.
Area of combined graphics PPT, part 2 content: new teaching knowledge
way of expression:
method one:
There are two trapezoids separated in the middle. The area of the team flag = the area of the trapezoid + the area of the trapezoid.
Method Two:
Connect the two corners of the flag with a straight line to make a large rectangle minus a triangle.
Method three:
Divide it into a large trapezoid and a triangle.
Summary of methods: segmentation method and supplementation method:
[Method Summary] In mathematics, we are accustomed to using the segmentation method or the addition method, and using auxiliary lines to transform a complex combined figure into a relatively simple figure, which brings simplicity to calculations. When drawing auxiliary lines, pay attention to drawing dotted lines, and use a pencil and ruler to draw.
Area of combined graphics PPT, the third part: knowledge sorting
Knowledge point 1: Segmentation method.
You can divide a combined figure into several simple figures, find the areas of these simple figures respectively, and then sum them up.
Example: What is the area of the safety exit sign? (unit cm)
[Analysis] This combined figure can be regarded as a triangle and a rectangle, and then find the areas of each and add them together.
Answer: 12×6+12×6÷2 =108 (cm²)
[Method summary] When using the segmentation method to calculate the area of a combined figure, if it can be seen directly, there is no need to use auxiliary lines. If the figure is complicated, it is necessary to use auxiliary lines to analyze.
Knowledge point 2: Supplementary method.
The supplement method is to draw auxiliary lines to turn the combined figure into a large simple figure, and then use this large simple figure to subtract one or several simple small figures to find the area of the combined figure.
Area of combined graphics PPT, Part 4: Classroom exercises
1. Find the area of the shaded part.
2. There is a vegetable field with a small pond in the middle, as shown on the right. On average, the vegetable field can produce 8 kilograms of vegetables per square meter. What is the area of this field in square meters? How many kilograms of vegetables can this land produce?
Answer: 60×45=2700 (square meters)
(8+10)×7÷2=63 (square meters)
2700-63=2637 (square meters)
2637×8=21096 (kg)
3. Find the area of the figure below.
Answer: 3×2÷2×5=15 (cm2)
Area of combined graphics PPT, part 5 content: homework
1. Fill in the blanks.
(1) 0.96 hectare = ( ) square meter.
(2) The sum of the upper and lower bases of a trapezoid is 18 cm, the height is 6.8 cm, and the area is ( ) square centimeters.
(3) The base of the parallelogram is 2.5 decimeters, the height is 1.2 times the base, and its area is ( ) square centimeters.
2. Find the area of the figure below. (Unit: cm)
32×20+32×10÷2=800 (cm²) 12×10-(8+3)×2÷2=109 (cm²)
3. Two identical trapezoids, the upper base is 23 cm long, the lower base is 27 cm long, and the height is 20 cm. If these two trapezoids are put together to form a parallelogram, what is the area of the parallelogram?
Answer: (23+27)×20=1000 (square centimeters)
Area of combined graphics PPT, part 6: knowledge expansion
There is a rectangular open space on campus, where it is planned to plant lawns and lay tiles (as shown on the right). Please find the area of the lawn and the area of the tiled floor respectively.
Area of tiles: (3+20)×12÷2=138 (m²)
Lawn area: 20×12-138=102 (m²)
Keywords: free download of PPT courseware for mathematics in the first volume of the fifth grade of the People's Education Press, PPT download of the area of combined shapes, PPT download of the area of polygons, .PPT format;
For more information about the "Area of Combined Figures Area of Polygons" PPT courseware, please click on the Area of Combined Figures PPT Area of Polygons PPT tab.
Area PPT of combined graphics "hectares, square meters":
"Hare, Square Meter" Area PPT of Combined Graphics Part One Content: Classroom Introduction 1. Combined with the specific situation of solving the problem, understand the necessity of area unit conversion, as well as the conversion relationship between area units. 2. Understand area units such as hectares and square kilometers..
"Footprints of Growth" area of combined graphics PPT:
"Footprints of Growth" area of combined graphics PPT
Part One: Classroom Introduction
1. Ability to correctly estimate the size of irregular graphics areas.
2. Able to calculate the area of irregular figures by counting grids.
3. Cultivate everyone to be diligent in using their hands and brains..
"Area of Combined Figures" PPT download of the area of combined figures:
"Area of Combined Figures" PPT Download of the Area of Combined Figures Part One: Review Old Knowledge Calculation formulas for the areas of several plane figures that have been learned. Appreciate and talk about the basic figures that each figure is composed of. A combination of several simple graphics..