Any ideas on helping dd 7 learn her number bonds to 20?

[MrsHeffley]

?????

TIA

For my dd I wrote down all the sums in a long list 14+ =20 etc and on the other side the all subtraction factors 20-7= etc and timed her doing them everyday trying to beat her best time everyday. First day took 8 minutes for each that was last Thursday a week later she can do each side in less than 60 seconds.

Did you muddle them?

Yes I did them on the computer and cut and pasted them into different orders because I was concerned she'd just remember the order of the answers otherwise.

Mrs heffley just out of interest as this is my daughters current target in year 2. DOn't suppose your school has told you what level your daughter is working towards?

Nope.Getting a tad worried re SATS as maths not her strong subject. They did say(teacher at parents evening) that kids who know the basics well do better.Maybe it's something they're concentrating on in year 2 as a whole.Dd isn't the most confident re maths so I figured this might help.

Sounds like my dd. She seems to find mental maths the biggest challenge.

My DCs like Numbershark. It's good for reinforcing all of these basics.

Hit the Button is a great website. www.wmnet.org.uk/resources/gordon/Hit%20the%20button%20v9.swf
Not only can you practice number bonds but you can practice tables and doubles and halves. My students love it.

Hello,
you can use this software:

www.mrbartonmaths.com/jigsaw.htm
www.mmlsoft.com/index.php?option=com_content&task=view&id=11&Itemid=12

to make jigsaws or dominos-type cards with the numbers bonds (e.g. 3 and 17, etc.) and make her practise practise practise

Also, you could cut out a 5 x 4 rectangle (made up of 20 squares, 4 rows of 5 squares each), then cut it into two shapes, for ex. one representing number 6 (one row of 5, plus one square), the other is the complementary one (number 14, two rows of 5, one of four). Do this for the 10 bonds, and she has to match the shapes (you can also write the number of squares on each of the shapes, to help her associate the symbol with the quantity). Does this make sense?

I also use cuisennaire rods. I think they are very visual.

Card Wars - pack of cards, remove the picture cards for now (and any jokers), and look at them together to check that she knows an Ace = 1. Split the pack in half. You each put down one card and the first to add them together and shout out the answer gets that pair of cards. At the end, count the cards you have got (in twos, natch - to start with you can count them aloud so she hears the sequence - good practice for another target I need hardly say that you should always usually JUST be slower than her to the answer...

You can move on to subtraction - of course then, you need to make sure that you take the smaller number from the bigger - another good concept they need to know. then to multiplication etc - any task you like. But I would stick to addition for a while.

IMO, number bonds to 20 don't need to be learned, - she needs to learn number bonds to 10. If he has instant recall that 6+4=10, she will know that 16+4=20 and 60+40=100. And learning number bonds to 10 is just a lot of practice.

Hi Mrs Heffley

We found playing '21' or black jack really helped with this. It focuses on more than just the '20' bonds, but really helps with mental maths.

We also played games with dice. So you can roll one, two or three - your choice and then from that number - what makes 20?

We also found it useful to do the numbers between - it seems odd but they also need to know all the ways to make 8 or 17 for subtraction especially. So for variety have them chose a number over 10 and then make the bonds rolling dice.