"Exploration Paradise" PPT courseware download

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"Exploration Paradise" PPT courseware download

Part One: Introduction of New Course

How many triangles can the polygon below be divided into?

(1) Draw the dotted line as shown and fill in the table.

Observing the data in the table, what did you find?

The number of line segments drawn is equal to the number of sides of the polygon minus 3.

The number of triangles divided into is equal to...

(2) Fill in the form based on the discovered patterns.

(3) When n=12, find the number of line segments drawn and the number of triangles divided into.

When n=12, the number of lines drawn =n -3=12 -3=9 (lines)

The number of triangles divided into = n -2 = 10 (pieces).

Discovery Park PPT, Part 2: Sum of interior angles of polygons.

(1) What is the sum of the interior angles of a quadrilateral?

Tell me how you calculated it.

A quadrilateral can be divided into two triangles. The sum of the interior angles of a triangle is 180°, and the sum of the interior angles of two triangles is 360°.

(2) Work in groups to complete the form below.

(3) When n=12, what is the sum of the interior angles of the polygon?

When n=12, 180°×(12 -2)=1800°.

Discovery Park PPT, Part 3: Classroom Problems

How should we group the numbers to minimize the product of two numbers?

Should the smallest number be written in the three-digit hundreds place?

In which number's digit should the largest number be written?

Answer: To minimize the product of two numbers, the smallest number should be written in the hundreds place of the three-digit number, and the largest number should be written in the ones place of the three-digit number.

Keywords: Free download of Hebei Education Edition mathematics PPT courseware for the second volume of fourth grade, Discovery Paradise PPT download, .PPT format;

For more information about the "Exploration Paradise" PPT courseware, please click the Discovery Paradise PPT tab.

"Exploration Paradise" PPT teaching courseware:

"Exploration Paradise" PPT teaching courseware Part One: Learning Guide We have studied line statistical charts before, and this book is almost over. Next, I will take everyone to explore new knowledge and summarize learning experience. Example 1: Problem of Class 5(1). (1) five (..

"Exploration Paradise" PPT download:

"Exploration Paradise" PPT Download Part One Content: Learning Objectives 1. Experience the process of discovering, summarizing rules, and applying rules during activities such as observation, organization, and discussion. 2. Be able to discover simple patterns in things and make simple calculations using the discovered patterns. ..

"Exploration Park" PPT:

"Exploration Park" PPT Part One: Find Patterns I found that the arrangement of colorful flags is regular. I found that the ribbons were also arranged regularly. What other patterns have you discovered? The arrangement of lanterns is regular. Find patterns. Question 1: Between every two basketballs...

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Update Time: 2024-11-22

This template belongs to Mathematics courseware Hebei Education Edition Fourth Grade Mathematics Volume 2 industry PPT template

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