Q&A #1590

Teachers' Lounge Discussion: Teaching basic addition and subtraction

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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

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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