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*Lindsey*
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| Posted: Feb 04 2011 at 8:25am | IP Logged
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My DS doesn't have all his addition facts mastered yet. He still has to figure out most answers and doesn't have many memorized yet. We are using MathUSee Alpha and are supposed to start the next lesson, which starts subtraction, but I'm not sure if we should move on or keep drilling additon facts.
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Lindsey
Mama to DS (11), DD(9), twin dds(7), DD (5), DS (4), DS (3), and 5 angels in heaven.
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hylabrook1
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Maybe a bit of each? Some children don't do as well memorizing math facts, but pick them up as they use them repeatedly. If your son works through things a bit more slowly because of not having the facts ready at his fingertips (no pun intended), maybe seeing the relationships between the addition and subtraction facts would make things stick better for him. Since addition and subtraction are so closely inter-related, I think you could do flash cards of addition facts and show him both addition and subtraction with the MUS manipulatives in the same time frame.
Another thought: I have some triangular flash cards that can be used to drill both addition and subtraction facts. One aspect of using them is to have the child look at the entire card. The corners of the card might say 7, 3, 4. The child then comes to associate those three numbers in relationship to one another, in any combination of adding or subtracting them. I'm wondering if this might be a helpful tool for your son.
Peace,
Nancy
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Chris V
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Having nothing to do with using MUS, but perhaps you can play some games with him to both reinforce addition and introduce subtraction. I often browse a variety of math website for games ideas for my girls since I do not yet use a formal cirriculum for them, and thus far, what I am doing is working well.
Here is a simple, fun, and easy game to play called Free the Animals . I actually have little animal figures that we use to put in each "cage", and along side us, as we play, I usually have a little bowl full of manipulatives (buttones, rocks, stones, etc) to aid in coming to the answer of the numerical difference between the two die.
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cathhomeschool
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hylabrook1 wrote:
| The corners of the card might say 7, 3, 4. The child then comes to associate those three numbers in relationship to one another, in any combination of adding or subtracting them. |
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How cool! I've never seen these but think they would be SO helpful in visualizing and really learning math facts.
Lindsey, I would move on to subtraction while continuing to drill addition with flash cards. (Maybe even make some like the ones Nancy suggests for the particular facts that he hasn't learned.) Also working through subtraction will help him memorize the addition facts since he's working backwards. And you can have him check his work by adding to see if he gets the original number -- automatic drill built-in. I use Turbo Twist and online games in addition to flash cards for drill too.
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Janette (4 boys - 22, 21, 15, 14)
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MaryM
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cathhomeschool wrote:
hylabrook1 wrote:
| The corners of the card might say 7, 3, 4. The child then comes to associate those three numbers in relationship to one another, in any combination of adding or subtracting them. |
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How cool! I've never seen these but think they would be SO helpful in visualizing and really learning math facts. |
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I've always heard of those called "fact family" cards. We found them helpful. I googled and found this You Tube video that explains how to use them.
Templates to fill in
Ready to cut out templates
I too would suggest moving on to the subtraction concepts while also continuing drill activities on addition. The fact families will help with the "family" associations of number sets for addition and subtraction, so will reinforce each other.
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Mary M. in Denver
Our Domestic Church
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kristacecilia
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We do 5 minutes of review and then the new lesson. Would something like that work?
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Krista
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Lori
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I used to have my son fill in the triangles, DAILY, to reinforce the fact families that he was having so much trouble memorizing. We also used the #cards from an UNO deck, and played addition war (the UNO cards don't have the #of objects on them, so they're less distracting, and they can't "cheat" by counting them)
When my son could win ALL the cards from the addition war game in a hand, he got a prize.
I'm now using them again for multiplication facts!
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Lori
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JodieLyn
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I agree.. doing subtraction may help. I have a daughter that was resisting learning subtraction so I started calling it "backwards addition" it usually made her giggle and it apparently didn't sound as intimidating 
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mamaslearning
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| Posted: Feb 08 2011 at 7:17pm | IP Logged
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MaryM wrote:
I've always heard of those called "fact family" cards. We found them helpful. I googled and found this You Tube video that explains how to use them.
Templates to fill in
Ready to cut out templates
I too would suggest moving on to the subtraction concepts while also continuing drill activities on addition. The fact families will help with the "family" associations of number sets for addition and subtraction, so will reinforce each other. |
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These are neat. I'm going to use them to help dd with her facts. Thanks for sharing!
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Lara
DD 11, DS 8, DS 6, DS 4
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4Real Forums : Living and Loving Numbers
Topic: Moving on to subtraction?
