"Pigeon Nest Problem" Mathematics Wide Angle PPT Courseware 2

Description

"Pigeon Nest Problem" Mathematics Wide Angle PPT Courseware 2

1. Game introduction

I will perform a "magic" for everyone. From a deck of cards, take out the king and king, and there are 52 cards left. Each of the 5 of you randomly draws one card. I know that at least 2 cards are of the same suit. Do you believe it?

2. Explore new knowledge

(1) Example 1

Put 4 pencils into 3 pencil holders. No matter how you put them, there will always be at least 2 pencils in one of the pencil holders.

What do "always" and "at least" mean?

why?

(2) Example 2

If each drawer can hold up to 2 books, then 3 drawers can hold up to 6 books, but the question requires 7 books. so……

I'll just let it go and watch.

1 book per drawer,

2 books in one drawer,

4 books in one drawer.

In both storage methods, one drawer holds 3 or more books, so...

3. Application of knowledge

(1) Do it

1. 5 pigeons flew into 3 pigeon cages, and there was always at least 2 pigeons flying into one pigeon cage. Why?

2. 11 pigeons flew into 4 pigeon cages, and there was always at least 3 pigeons flying into one pigeon cage. Why?

3. If 5 people sit on 4 chairs, there will always be at least 2 people sitting on one chair. Why?

4. Assign homework

Homework: Exercise 13 on page 71, questions 2 and 3.

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For more information about the "Wide Angle Pigeonhouse Problem in Mathematics" PPT courseware, please click the "Wide Angle Pigeonhouse Problem in Mathematics ppt" ppt tag.

"Pigeon Nest Problem" Mathematics Wide Angle PPT Courseware 3:

"Pigeon Nest Problem" Mathematics Wide Angle PPT Courseware 3 1. Exploring New Knowledge There are 4 red balls and 4 blue balls of the same size in the box. If you want to find out, there must be 2 balls of the same color. How many balls must you find at least? If you draw 5 balls, there must be 2 of the same color, because only 2 balls can...

"Pigeon Nest Problem" Mathematics Wide Angle PPT Courseware:

"Pigeon Nest Problem" Mathematics Wide-angle PPT Courseware 1. Introduction to the game 2. Exploring new knowledge Put 3 pencils into 2 pencil boxes. What are the ways to put them? No matter how you put them, there will always be at least 2 pencils in a pencil box. Put 3 pens first, put 1 pen in each pen holder, and leave...

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Update Time: 2024-10-26

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

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