This presentation is the property of its rightful owner.
Sponsored Links
1 / 83

全數的乘法 國立台南大學數學教育系 謝 堅 PowerPoint PPT Presentation


  • 120 Views
  • Uploaded on
  • Presentation posted in: General

全數的乘法 國立台南大學數學教育系 謝 堅. 人們為什麼會發明乘法? 發明乘法對我們有那些幫助? 如何幫助學童理解並學會 使用乘法替代加法 ( 相同數字 ) 解決問題? . 乘法問題的語意與解題策略: 加減運算是解決相同單位的點數問題 , 而乘法問題中出現兩種不同的單位 ,面對乘法問題, 可以有那些解讀題意的方式 ? 可以有那些解題策略 ?. 1 盒蘋果有 3 個, 4 盒蘋果有多少個?  將乘法問題解讀為加法問題 ,並 使用加法當做工具解題。 3 + 3 + 3 + 3 = ( ) 。 透過加法解決乘法問題比較沒有效率。.

Download Presentation

全數的乘法 國立台南大學數學教育系 謝 堅

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


5865920


5865920

  • ()


5865920

  • ??


5865920

  • 134

  • 3333( )


5865920

  • 134

  • 134


5865920

  • 13

  • 13

  • 13

  • 13

  • 13

  • 412


5865920

  • 134

  • 3 412

  • 3


5865920

  • (

  • )

  • 431

  • 34

  • 34


5865920

  • vs


5865920

  • ()


5865920

  • 13 412

  • 13412


5865920

  • ?

  • ?


5865920

  • 12

  • 12631/348


5865920

  • 1 12121

  • 12 662

  • 14 334


5865920

  • 136 1/3 1/3 36

  • 11/4 4848 1/4


5865920

  • 123456

  • 2126

  • 2

  • 6

  • 12 (62)(121)


5865920

  • 134

  • 1362/3

  • (3412362/324)


5865920

  • 3434

  • 362/33632

  • ()?


5865920

  • ()

  • ()?


5865920

  • ()134

  • (1361/3


5865920

  • 1341

  • 431

  • 34?


5865920

  • 1(361/31

  • 1/3361

  • 361/3?


5865920

  • 3366399312

  • 333312

  • 3412


5865920

  • 3366399312

  • 333312

  • 4312341234=12

  • 3412


5865920


5865920

  • 3535

  • 1/351/35

  • 51/351/3

  • ?

  • 51/3?

  • 51/3


5865920

  • 5315

  • 3515

  • 3515


5865920

  • 51/35/3

  • 1/35/3

  • 1/355/3

  • ?


5865920

  • 515

  • 5

  • 5


5865920

  • 210

  • 735

  • 0.31.5

  • 2/710/7

  • 5


5865920

  • 25105210555

  • 102?


5865920

  • 3333123412

  • 6 1/3 2 61/32


5865920

  • ?


5865920

  • 82

  • 3515

  • 5315

  • 5315


5865920

  • 51/35/3

  • 1/355/3

  • 1/355/3

  • 1/355/3

  • 51/35/3

  • 51/35/3


5865920

  • 533535


5865920

  • ?

  • 134

  • 3366399312

  • 333312

  • ()?


5865920

  • (

  • (4)


5865920

  • 3366399312

  • 333312

  • 4312

  • 3412

  • 3412


5865920

  • 4312

  • 4312 3412


5865920

  • 2423/4

  • 2424824466318 481866


5865920

  • 22448

  • 24248

  • 24248

  • 23/42466

  • 2423/466

  • 2423/466


5865920

  • 3/42418

  • 243/418

  • 243/418

  • ?


5865920

  • ab)cbc


5865920

  • 864


5865920

  • 4

  • 8432

  • 32

  • 632192

  • 684192


5865920

  • 1

  • 6848

  • 4

  • 484192

  • 684192


5865920

  • 684192

  • 684192


5865920

  • 64


5865920


5865920

  • 4768


5865920


5865920


5865920

  • ()()? ?

  • ? ?

  • ()()


5865920

  • 56423224

  • (56324224)

  • 7642

  • 4624

  • ?


5865920

  • 476272(376282)

  • ?


5865920

  • (2.35.67)?


5865920

  • ()


5865920

  • 82

  • 100


5865920

  • 100


5865920

  • 3867=( )


5865920

  • 386386772

  • 7723861158

  • 11583861544

  • 15443861930

  • 19303862316

  • 23163862702


5865920

  • 3862772

  • 38631158

  • 38641544

  • 38651930

  • 38662316

  • 38672702


5865920

  • (386)238623864386


5865920

  • 386386772 (2386)

  • 7727721544 (4386)

  • 15447722316 (6386)

  • 23163862702 (7386)


5865920

  • 3862772

  • 38641544

  • 38662316

  • 38672702

  • ()


5865920

  • ()


5865920

  • 1

  • 3877(300807) 7

  • 300780767

  • 210056042

  • 2702

  • 3007307370


5865920

  • 110

  • 6742

  • 8756 560

  • 37212100

  • 38672702


5865920


5865920


5865920

  • 3746)


5865920

  • 1

  • 37406

  • (30746

  • 307406


5865920

  • 110

  • 1

  • 3746

  • 340612018

  • 740628042


5865920

  • 110

  • 3746

  • 7642(7642

  • 7428(7428

  • 3618(3618

  • 3412(3412


5865920

  • + + +


5865920

  • ?


5865920


5865920

  • 1

  • 0

  • 42


5865920

  • 1101

  • 714071043104031004

  • 42


5865920


5865920

  • (100)?


5865920

  • 30401200)

  • (307)(406

  • 42

  • 18028042?


  • Login