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ÀÌÀüÆäÀÌÁö

ÄÁÅÙÃ÷

[°úÇмöÇÐ]¢Ä¹Ì±¹±³°ú¼­·Î ¼öÇгîĄ̀é

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  • 2008-02-20
2

Subtraction Concepts (»¬¼À)

 

µ¡¼À¿¡ ÀÌ¾î »¬¼À°ú ³î¾Æ º¼±î¿ä...^^

 

µ¡¼Àµµ ¸¶Âù°¡Áö¿´Áö¸¸

»¬¼À¿¡¼­µµ ¿¬»ê½Ã Ç×»ó ¾î¶² ¹°Ã¼(eg. counters)¸¦ ÀÌ¿ëÇØ ´«À¸·Î º¸°í È®ÀÎÇØ °¡¸ç

°è»êÇϵµ·Ï À¯µµ ÇÕ´Ï´Ù.

(¡ÚCounters : ÁÖ»çÀ§¸¦ ´øÁö¸ç ³îÀÌÇÒ ¶§ ¸» ¿ªÇÒÀ» ÇÏ´Â °ÍµéÀ» counter¶ó ºÎ¸£´Âµ¥¿ä.

¿¬»êÇ®À̽ÿ¡µµ À¯¿ëÇϳ׿ä.

ÁÖº¯ÀÇ ÀÛ°í °£´ÜÇÑ »ç¹°ÀÌ¸é ¾î¶²°ÍÀÌµç °¡´ÉÇÏÁö¿ä.

buttons, blocks, marbles,cereal pi-e-ces, crayongsµî

¾ÆÀÌÀÇ ÁÖº¯ÀÇ Ä£±ÙÇÑ °ÍÀ¸·Î ¼±ÅÃÇÏ¿© »ç¿ëÇØ º¸¼¼¿ä.)

 

mat ÇÑ Àå(a4Áö Á¤µµ¸é ÃæºÐÇÕ´Ï´Ù.) °ú

counters(Àú´Â °è¼Ó ÀÌ¿ëÇØ ¿À´ø ºí·°À» ÁÖ·Î ÀÌ¿ëÇÏ¿´¾î¿ä.)

¸é °£´ÜÇÑ »¬¼À½ÄÀº ¹®Á¦ ¾ø¾î¿ä.

 

 

 

 ¢Ä Vocabulary ¢Å

 

subtract To take away to find out how many are left
minus sign

The symbol for subtraction.

differenceThe answer to a subtraction problem
subtraction sentence An equation such as 6 - 2 = 4.
 

 

¢Ä Try it out ¢Å 

 

¾Æ·¡ ±×¸²Ã³·³ ¹®Á¦ÀÇ ¹è°æÀÌ µÉ ¸¸ÇÑ ±×¸²À» ¿ì¼± Á¦½ÃÇϰí

¾ÆÀ̰¡ À̾߱⸦ ¸¸µé¸ç ¹®Àå½ÄÀ» ¿Ï¼ºÇØ º¾´Ï´Ù.

 

Show each story with counters.

(Ä«¿îÅ͸¦ ÀÌ¿ëÇØ °¢ À̾߱⸦ ³ªÅ¸³» º¸¼¼¿ä.)

Write the numbers.

(¼ýÀÚµµ ½á º¸¼¼¿ä.)

1. 10 apples 10 picked 0  left.

Áؼ­´Â ºóÄ­¿¡ 10,10,0 À» ä¿ö ³Ö³×¿ä..

Á» Ȳ´çÇß¾î¿ä..

Æò¹üÇÑ »¬¼À½ÄÀÌ ¾Æ´Ï¶ó¼­.¤¾¤¾

±×¸®°í´Â ³ª¹«¿¡ ¾Æ¹«°Íµµ ³ªÅ¸³»Áö ¾Ê¾ÒÁö¿ä..¤¾¤¾

 

2. 9  pears  6  eaten  3  left.

 Çϰí´Â ±×¸²À¸·Î Ç¥ÇöÇß½À´Ï´Ù.

 

 

¢Ä »¬¼À½ÄÀ» ÀÌÇØÇϰí Ç®¾îº¸±â ¢Å

 

¿ì¼± ¾Õ¿¡ ¸»ÇÑ counter¸¦ ÀÌ¿ëÇØ °£´ÜÇÑ µ¡¼À½ÄÀ» Ç®¾î º¾´Ï´Ù.

ÀÌ Ã¥ÀÇ ¸Ç µÚ¿¡´Â ¿©·¯°¡Áö workmatµéÀÌ ºÙ¾î Àִµ¥¿ä.

»¬¼À½ÄÀ» Ä«¿îÅ͸¦ ÀÌ¿ëÇØ Ç®ÀÌÇÒ ¶§´Â ±×³É ¾Æ¹« ¼±µµ ¾ø´Â Å« ºó °ø°£°ú °°Àº mat¸¦ ÀÌ¿ëÇÕ´Ï´Ù.

(¾Æ·¡ Áؼ­°¡ »ç¿ëÇÏ´Â mat »çÁø 󷳿ä.)

±× mat¿¡ Ä«¿îÅ͸¦ ³õ¾Ò´Ù Ä¡¿ü´Ù Çϸ鼭 »¬¼ÀÀ» À¯µµ ÇÏÁö¿ä.

Á¦°¡ ³»¾îÁØ °£´ÜÇÑ »¬¼ÀÀ» Çϰí ÀÖ½À´Ï´Ù. 

 

 

¡Ú»¬¼À½ÄÀ» Ç®ÀÌ ½Ã Ç¥Çöµé

Show 4 counters. Ä«¿îÅÍ 4°³¸¦ ³ö ºÁ.

Take away 1. ÇѰ³¸¦ Ä¡¿öºÁ(»©³»ºÁ).

How many are left? ¸î °³ ³²¾ÒÁö?

3 counters left. 3°³ ³²¾Ò´Ù.

 We can use the minus sign and equals sign to write about subtraction.

- ¿Í =À» ÀÌ¿ëÇØ »¬¼À½ÄÀ» ³ªÅ¸³¾ ¼ö ÀÖ¾î.

Let's prectise how to subtract.

»¬¼ÀÇÏ´Â ¹æ¹ýÀ» ¿¬½ÀÇÏÀÚ.

You can cross out to subtract like this.

»©±â À§ÇØ ÀÌ·¸°Ô Áö¿ö ¾ø¾Ö¸é µÅ.

 What math word tells you how many are left?

¾ó¸¶°¡ ³²¾Ò´ÂÁö´Â ³ªÅ¸³»´Â ¼öÇпë¾î°¡ ¹¹Áö?

The difference tells you how many are left.

difference´Â ¾ó¸¶°¡ ³²¾Ò´ÂÁö¸¦ ¸»ÇØÁà.

Write the subtraction sentence.

»¬¼À½ÄÀ» ½á º¸ÀÚ.

 

 

¢Ä Think more.... ¢Å 

 ¹®Á¦ÀÇ Áß°£Áß°£ °¨Ãʰ°Àº ¿ªÇÒÀ» ÇÏ´Â ¹®Á¦µéÀÌ º¸ÀÔ´Ï´Ù.

Çѹø ´õ »ý°¢ÇØ º¸ÀÚ´Â Àǵµ Àεí ÇÕ´Ï´Ù.

 

 

 

 

 

 

 

 

 ¢Ä Cross word Puzzle¢Å

 

 µ¡¼À½Ä°ú »¬¼À½Ä¿¡¼­ µîÀåÇÑ ´Ü¾îµé·Î ÆÛÁñÀ» ¸¸µé¾î º¸¾Ò¾î¿ä.

 (÷ºÎÆÄÀÏ)

Plus signThe symbol for addition
addPut groups together
sum The answer to an addition problem
zero None
subtract   To take away to find out how many are left
minus sign The symbol for subtraction
difference The answer to a subtraction problem

 

 

 

¢Ä Think of stories¢Å

Problem solving ÀÇ ¿ªÀ¸·Î ¼ýÀÚ½ÄÀ¸·Î ¹®Á¦ ¸¸µé¾î ³»±â¸¦ ½ÃµµÇØ º¾´Ï´Ù.

 

 

Áؼ­°¡ ÇØ ³õÀº À̾߱â...

 

¼öÇпë¾îÄ«µå¨ë<-- Ŭ¸¯

 

¼öÇпë¾îÄ«µå¨ì<--Ŭ¸¯

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