"Wide Angle of Mathematics-Reasoning" PPT (Lesson 2)

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"Wide Angle of Mathematics-Reasoning" PPT (Lesson 2)

Part One: Lesson Objectives

1. Through activities such as observation, guessing, experimentation, reasoning, etc., use tables and elimination methods to make inferences and judgments, and develop preliminary logical reasoning abilities.

2. Use rules to solve some practical problems and stimulate creative thinking.

Reasoning PPT, part 2: interactive new teaching

In the square on the right, each row and column has four numbers from 1 to 4, and each number appears only once in each row and column. What should B be?

Each number appears only once in each row and column.

Each row and column has four numbers from 1 to 4.

First, look at which row and column of a blank have three different numbers, so that you can determine the number that should be filled in the blank.

2, 3, and 1 have appeared in the row and column where A is located. Therefore, A can only be 4.

Reasoning PPT, Part 3: Consolidation Exercises

In the square below, each row and column has four numbers from 1 to 4, and each number appears only once in each row and column. What should B be? What about the numbers in the other squares?

Starting from A, 4, 2, and 3 already appear in the row and column of A, so A is 1.

Looking at the row and column where B is located, 4, 1, and 2 have appeared, so B is 3.

Think about the numbers in the tens place again, □+□=5, 4 and 1 form 5, and 2 and 3 form 5. The question requires that the numbers in each calculation cannot be repeated, so choose 2 and 3.

Reasoning PPT, Part 4: Class Summary

What did you gain and experience today?

In this lesson, we used the method of calculating four-square numbers to calculate the number in the blank space. When filling in a number in a square, you should first look at which blank has three different numbers in the row and column, so that you can determine the number that should be filled in this blank, and so on, you can fill in the square. Complete the numbers.

Keywords: Free download of second-grade mathematics PPT courseware from the People's Education Press, mathematics wide-angle PPT download, reasoning PPT download, .PPT format;

For more information about the "Mathematical Wide-angle Reasoning" PPT courseware, please click the Mathematical Wide-angle PPT Reasoning PPT tab.

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Update Time: 2024-09-15

This template belongs to Mathematics courseware People's Education Press Second Grade Mathematics Volume 2 industry PPT template

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