Beijing Normal University eighth grade first volume mathematics

Description

"Exploring the Pythagorean Theorem" Pythagorean Theorem PPT courseware

(1) Observe Figure 1-1

Square A contains ___ small squares, that is, the area of ​​A is ___ unit area.

The area of ​​square B is ___ unit area.

The area of ​​square C is ___ unit area.

The number of grid points on the perimeter of the square is a=12

The number of grid points inside the square b=13

Therefore, the area of ​​square C is: 1/2×12+13-1=18

(Unit area)

Discuss

(1) Can you express the area of ​​a square using the side lengths of a triangle?

(2) Can you find any relationship between the lengths of the three sides of a right triangle? Communicate with peers.

(3) Make a right triangle with 5 cm and 12 cm as right-angled sides respectively, and measure the length of the hypotenuse. Does the rule in (2) still hold for this triangle?

think about it

Xiao Ming's mother bought a 29-inch (74 cm) TV. After Xiao Ming measured the TV screen, he found that the screen was only 58 cm long and 46 cm wide. He thought the salesperson must have made a mistake. Can you explain why this is?

What we usually call a 29-inch or 74-centimeter TV refers to the diagonal length of the screen

58²+46²=5480 74²=5476

Keywords: Pythagorean Theorem courseware, Exploring the Pythagorean Theorem courseware, Beijing Normal University edition eighth-grade mathematics PPT courseware for the first volume, eighth-grade mathematics slide courseware download, Pythagorean Theorem PPT courseware download, Exploring the Pythagorean Theorem PPT courseware download, .ppt Format

For more information about the "Pythagorean Theorem Exploring Pythagorean Theorem" PPT courseware, please click on the Pythagorean Theorem ppt Exploring Pythagorean Theorem ppt tag.

"Exploring the Pythagorean Theorem" Pythagorean Theorem PPT courseware 6:

"Exploring the Pythagorean Theorem" Pythagorean Theorem PPT Courseware 6 Read the textbook and answer the questions (1) Observe Figure 2-1. Square 1 contains ____ small squares, that is, its area is ____ unit area. The area of ​​square 2 is ____ unit area. The area of ​​square 3 is_..

"Exploring the Pythagorean Theorem" Pythagorean Theorem PPT courseware 5:

"Exploring the Pythagorean Theorem" Pythagorean Theorem PPT Courseware 5 The specific method of independent exploration activities before class is: Ask each study group to find and understand as many methods as possible to verify the Pythagorean Theorem from the Internet or books. Analysis of the verification process. And appreciate the first type: to...

"Exploring the Pythagorean Theorem" Pythagorean Theorem PPT courseware 4:

"Exploring the Pythagorean Theorem" Pythagorean Theorem PPT Courseware 4 Question Situation 1. In the last class, we have obtained the Pythagorean Theorem through exploration. What is the content of the Pythagorean Theorem? 2. How to verify the Pythagorean Theorem? According to incomplete statistics, there are more than 400 verification methods. You...

File Info

Update Time: 2024-09-30

This template belongs to Mathematics courseware Beijing Normal University eighth grade first volume mathematics industry PPT template

Preview