"The Knowledge of Number Graphics" Fun Mathematics PPT

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"The Knowledge of Number Graphics" Fun Mathematics PPT

Part One: Introduction of New Knowledge

Try to figure out how many different routes there are in order so that there are no duplicates or omissions.

Count the short line segments first: AB, BC, CD,

Then count the longer line segments: AC, BD

The last longest line segment: AD

First count the line segments starting from A,

Then count the line segments starting from B,

The last number of line segments starting from C,

PPT on the knowledge of digital graphics, part 2: classroom exercises

If there are 7 bus stations, how many different tickets need to be prepared for a one-way journey? What about 8? what have you found?

When there are 5 stations, the number of ticket types is: 4+3+2+1=10 (types)

When there are 6 stations, the number of ticket types is: 5+4+3+2+1=15 (types)

When there are 7 stations, the number of ticket types is: 6+5+4+3+2+1=21 (types)

When there are 8 stations, the number of ticket types is: 7+6+5+4+3+2+1=28 (types)

The knowledge of digital graphics PPT, the third part: Class summary

Calculation rules for counting line segments:

1+2+3+……+(n-1) =The number of line segments (n represents the number of endpoints of the line segment)

Or: number of line segments = points × segments ÷2

PPT on the knowledge of digital graphics, part 4: Classwork

1. In terms of men’s singles, as of the 2015 Suzhou World Table Tennis Championships, the Chinese table tennis team has won a total of 18 championships, 17 runner-ups, and 31 third runner-ups. Since the 2005 Shanghai World Table Tennis Championships, the Chinese table tennis team has won the World Table Tennis Championships for six consecutive times. Men's singles champion.

In women's singles, the Chinese women's team has won a total of 21 championships, 16 runner-ups, and 41 third-place finishes. Since 2007, the Chinese team has achieved the feat of winning the top four for five consecutive years.

If there are 24 players participating in a table tennis match, and every two players play one game, how many games will be needed?

23+22+21+20+19+18+17+16+15+14+13+12+11+10+9+8+7+6+5+4+3+2+1 =276 (games)

Answer: 276 games are required.

Keywords: Beijing Normal University version of the fourth grade mathematics PPT courseware for free download, knowledge of number graphics PPT download, mathematics fun PPT download, .PPT format;

For more information about the PPT courseware "The Knowledge of Fun Number Graphs in Mathematics", please click the PPT tab of the Fun PPT Knowledge of Number Graphs in Mathematics.

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Update Time: 2024-10-12

This template belongs to Mathematics courseware Beijing Normal University Edition Fourth Grade Mathematics Volume 1 industry PPT template

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