Teach me addition the Right Start way...

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Can you teach me how to add (and subtract), making everything 5's and 10s - the Right Start way? I'm hoping it's a strategy my 13 year old can use to memorize his facts without using his fingers.

Thank you!! ;)

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Can you teach me how to add (and subtract), making everything 5's and 10s - the Right Start way? I'm hoping it's a strategy my 13 year old can use to memorize his facts without using his fingers.

Thank you!! ;)

RS and Singapore share the base 10 method of doing things. RS also has a base 5 way of looking at it.

Addition using the 2 5's method:

7+8=

5+2+5+3=10+2+3=10+5=15

Addition using the base 10 method:

8+7=

8+2+5=10+5=15

Subtraction using the base 10 method:

12-7=

12-7=2+10-7=2+3=5

Subtraction an almost problem:

12-9=

12-9=12-10+1=2+1=3

I counted in my fingers till my kids started Singapore. I found the moving numbers around cumbersome at first, but stuck with it because it clicked for the kids. It took longer for it to work for me, but I no longer needs to use my fingers. :D

With multiplication and division you do memorize math facts. Generally RS has you cover one number daily, starting with the lower numbers and then working up to the higher numbers. It is always acceptable to break it into a smaller problem. For example if he can't remember what 8x8 is then go to (4x8)+(4x8)= It won't win speed records but it does still get you to the right answer. I still struggle with my upper level math facts. I have 1-6 for all the numbers, but 7-9 I get confused on sometimes. That is despite drilling the kids in it daily (I am dyslexic, BWT), sigh...

Heather

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Thank you Heather. DS is dyselxic, so I'm trying to find a way to help him. I'm okay with him using his fingers for addition/subtraction. It just takes him longer than most. I know it's embarrassing for him, though.

Multiplication tables are a different thing. He needs a way to remember those.

This will be our first year homeschooling; it's amazing how much I've learned about the way he learns and struggles.

Thanks for the details. Any idea which level Singapore I should start with, to cover the basics? He is math minded, so he should be going into prealgbra type work. But I don't want him to miss pieces of the Singapore way of thinking!

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Thank you Heather. DS is dyselxic, so I'm trying to find a way to help him. I'm okay with him using his fingers for addition/subtraction. It just takes him longer than most. I know it's embarrassing for him, though.

Multiplication tables are a different thing. He needs a way to remember those.

This will be our first year homeschooling; it's amazing how much I've learned about the way he learns and struggles.

Thanks for the details. Any idea which level Singapore I should start with, to cover the basics? He is math minded, so he should be going into prealgbra type work. But I don't want him to miss pieces of the Singapore way of thinking!

You might consider buying him an abacus. I hear the RS abacus comes with instructions, so that when he does HAVE to use something, it is something that is more acceptable in an adult context, KWIM?

I learned a lot just from the 1A level, which though I know it is ridiculously easy. That is where the whole and part based on 10 is introduced. I am trying to think of a quicker/easier way to get there. You could ask about the RS transitions level. I know it teaches how to use the abacus, but I don't know if it emphasizes base 10 math. You could also ask Jenny over on the Singapore Math forums. She writes the HIG's and has graduated two of her own students. If there is a short cut she would know it.

Heather

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Well, wouldn't you know that I just ordered the RS abacus, transition workbook and card games last night!

Off to find Jenny at Singapore!;)

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Well, wouldn't you know that I just ordered the RS abacus, transition workbook and card games last night!

Off to find Jenny at Singapore!;)

I love it when things just work out!

Heather

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