Teacher2Teacher |
Q&A #1590 |
From: Nancy
To: Teacher2Teacher Public Discussion
Date: 2003091210:58:56
Subject: addition and subtraction facts
Begin with adding 0. Show your child with manipulatives how adding 0 does not change the number. When she has that mastered, start working on adding ones. Show her on the number line or a hundreds number board how moving one space to the right or one number to the right shows the answer. Make a card for each +1 fact. When she can solve those quickly and without thinking, switch to the +2's in the same manner. When those are mastered, show her the doubles (4+4, 5+5, 6+6, etc.). Explain that the answer to all those kinds of problems are even numbers. Have her master the doubles. I will stop there for a moment and explain how are important counting skills are to math success. Count with your child every day. Make sure she can count by 1's to 100, 5's to 100, 10's to 100, by 2's to 20, by 2's odd numbers (1,3,5,7,9, etc.). Until they have mastered conting, they will not be ready for the concept of addition or subtraction. Make sure she understands the concept of odd and even numbers. Now begin on doubles +1 and doubles +2. She will already have the concept of adding one more and two more. A trick for the nines is to put the number that is one less in the ones place. For example, nines are easy to learn because 9+4=13. 3 is one less than 4. 9+7=16. 6 is one less than 7. This is a really helpful tool. Introduce one new fact at a time, while all the time reviewing a pile of cards for facts already mastered. I hope this helps! Nancy at USD466, Title Math
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