"Area of ​​a Circle" Circle PPT (Lesson 1)

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"Area of ​​a Circle" Circle PPT (Lesson 1)

Part One: Exciting Introduction

How to find the area of ​​a circular lawn?

Knowledge explanation

The size of the plane occupied by a circle is called the area of ​​the circle.

How to get the area of ​​a circle?

Can you convert circles into shapes you have learned before?

Divide into 4 equal portions

Area of ​​a circle PPT, part 2: practice and consolidation

1. Calculate the area of ​​each circle below.

10÷2＝5（cm） 3.14×3²＝28.26（cm²）

3.14×5²＝78.5（cm²）

2. The diameter of a round coffee table is 1 m. What is its area in square meters?

1÷2＝0.5(m)

3.14×0.5²＝0.785（m²）

Answer: Its area is 0.785m².

Area of ​​a circle PPT, the third part: knowledge summary

The meaning and calculation formula of the area of ​​a circle

The size of the plane occupied by a circle is called the area of ​​the circle.

Derivation of the formula for the area of ​​a circle (square the circle)

Area of ​​a Circle PPT, Part 4: Summary of Harvests

Classmates, what knowledge have you learned in this class?

Keywords: Free download of PPT courseware for sixth grade mathematics from the People's Education Press, PPT download of the area of ​​a circle, PPT download of a circle, .PPT format;

For more information about the "Area of ​​a Circle" PPT courseware, please click on the Circle PPT Area of ​​a Circle PPT tab.

"Area of ​​a Circle (2)" Circle PPT courseware download:

Download the circle PPT courseware "Area of ​​a Circle (2)" Part One: Classroom Introduction 1. Master the formula for calculating the area of ​​a circle. 2. Be able to use the knowledge of circle area to solve some simple practical problems. 3. Experience the idea of ​​turning a curve into a straight line, and initially experience the idea of ​​extremes. ... ... ....

"Area of ​​a Circle (2)" Circle PPT teaching courseware:

"Area of ​​a Circle (2)" Circle PPT Teaching Courseware Part One: Preparation before class Learning focus: Use the area calculation formula of a circle to solve simple practical problems. Learning difficulty: Use the area calculation formula of a circle to calculate the area of ​​a more complex combined figure containing a circle. ..

"Area of ​​a Circle (2)" Circle PPT Download:

"Area of ​​a Circle (2)" Circle PPT Download Part One: Review Introduction The size of the plane occupied by a circle is called the area of ​​the circle. What is the formula for the area of ​​a circle? S=r What is the derivation process of the area formula of a circle? The area formula is to fold the circle in half, divide it into two semicircles, and divide each...

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Update Time: 2024-10-03

This template belongs to Mathematics courseware People's Education Press Sixth Grade Mathematics Volume 1 industry PPT template

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