"Area of Triangles" Area of Polygons PPT Teaching Courseware

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People's Education Press Fifth Grade Mathematics Volume 1	pptx	6 MB

"Area of Triangles" Area of Polygons PPT Teaching Courseware

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Upload Time: 2024-09-09

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Description

"Area of Triangles" Area of Polygons PPT Teaching Courseware

Part One: Exciting Introduction

How can you calculate the area of the red scarf?

Knowledge explanation

Convert to learned graphics

Two identical acute-angled triangles can form a parallelogram.

Two identical right triangles can form a parallelogram.

Two identical obtuse triangles can form a parallelogram.

Formula Derivation

The base of the parallelogram is equal to the base of the triangle.

The height of the parallelogram is equal to the height of the triangle.

The area of a parallelogram is equal to twice the area of a triangle.

Area of triangle PPT, part 2 content: detailed explanation of examples

The base of the red scarf is 100 and the height is 33. What is its area in square centimeters?

=ℎ÷2

=100×33÷2

=1650(2)

Answer: Its area is 16502.

Area of a triangle PPT, part 3: practice and consolidation

The area of a triangular green space is 13.5, the base is 1, and how many meters is the height?

= ÷2

=13.5×2÷12

=2.25()

Answer: High is 2.25.

Area of triangle PPT, part 4 content: knowledge summary

Derivation of triangle area

S=1/2ah

after class homework

Exercise 20 Questions 2 and 3

Keywords: Free download of PPT courseware for fifth-grade mathematics from the People's Education Press, PPT download of the area of a triangle, PPT download of the area of a polygon, .PPT format;

For more information about the "Area of Polygons and Areas of Triangles" PPT courseware, please click on the Area of Polygons PPT and Area of Triangles PPT tag.

"Area of Triangles" Area of Polygons PPT free download:

"Area of Triangles" Area of Polygons PPT free download Part 1: Review old knowledge Calculate the area of the parallelogram below. What types of triangles can be divided into angles? Acute triangle Right triangle Obtuse triangle ... ... ... Three..

"Area of Triangles" Area of Polygons PPT Free Courseware:

"Area of Triangles" Area of Polygons PPT Free Courseware Part One: New Lesson Introduction Calculate: The base of the red scarf is 28cm and the height is 25cm. What is its area in square centimeters? S=Bottom height 2 =28252 =350cm Answer: Its area is 350 square centimeters..

"Area of Triangles" Area of Polygons PPT Courseware (Lesson 2):

"Area of Triangles" Area of Polygons PPT Courseware (Lesson 2) Part One: Class Introduction 1. Create a learning situation for students to independently explore the calculation method of triangle area. 2. Be able to use formulas to calculate the area of a triangle. 3. Solve some real life problems..

File Info

Update Time: 2024-09-09

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Area of polygon PPT Area of triangle PPT

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"Area of Triangles" Area of Polygons PPT Teaching Courseware