Cait Posted May 16, 2009 Posted May 16, 2009 Ok, what's it called, when you look at a group of objects and just know that there's 6 or 9 or whatever without having to count them?
Lyanne Posted May 16, 2009 Posted May 16, 2009 All I can think of right now is 'estimate'. but I don't think that's quite it?
calicojo Posted May 16, 2009 Posted May 16, 2009 I think its something like subitize / subitisation. I remember learning this on a numeracy course a long time ago and thought it was a good concept - its when you see the spots on a dice and just know they mean 6 or 5 or whatever.
JacquieL Posted May 16, 2009 Posted May 16, 2009 We need some clever mathematical bod to come along. I would just have said instant recognition. You don't mean conservation by any chance? That is when a child can recognise that there are the same number of objects however a given number in a set are arranged. So six is six whether in a line, a circle, spread out, etc. This is quite a cognitive leap for children. Just ignore me if that isn't what you mean.
Guest Posted May 16, 2009 Posted May 16, 2009 'Subitizing' is recognising a small number of objects without counting them. Only works up to about 6 though like on a dice. Otherwise cardinality is knowing the last number you said is the total number of objects.
Cait Posted May 16, 2009 Author Posted May 16, 2009 (edited) We need some clever mathematical bod to come along. I would just have said instant recognition.You don't mean conservation by any chance? That is when a child can recognise that there are the same number of objects however a given number in a set are arranged. So six is six whether in a line, a circle, spread out, etc. This is quite a cognitive leap for children. Just ignore me if that isn't what you mean. haha - no, I had conservation of number in my head - so it's blocking all other thought processes! Think it might be subitize, thanks. He looked at 4 bobbins and knew there were 4 without counting. Subitizial recognition sounds posh - what do you think? Haha - just looked at the wikipedia entry for subitizing and counting - first paragraph, hmm, ok, yeah. Next two WHA???????? Edited May 16, 2009 by Cait
Guest Posted May 16, 2009 Posted May 16, 2009 Well I never even knew it had a name of its own, you learn something new every day!
JacquieL Posted May 16, 2009 Posted May 16, 2009 I shall file it in my brain and no doubt will have forgotten by tomorrow. I think I knew this once.
Cait Posted May 16, 2009 Author Posted May 16, 2009 I shall file it in my brain and no doubt will have forgotten by tomorrow. I think I knew this once. Make a post it - and try to get it into conversation at least once on Monday! That can be our challenge for the week! Maz, you up for it or still suffering with ennui?
Cait Posted May 16, 2009 Author Posted May 16, 2009 Hi, Piaget called it conservation if that helps. Conservation is a bit different it's when you count out say 6 smarties and the child knows there are six, and still knows there are six even if you spread them out or arrange them differently
Guest Posted May 16, 2009 Posted May 16, 2009 Make a post it - and try to get it into conversation at least once on Monday! That can be our challenge for the week! Maz, you up for it or still suffering with ennui? Ha Cait, Only thing is, how do you pronounce it? Is it 'sub' or 'soob'. Sorry to sound dense but it is a new word for me too! Sue
Cait Posted May 16, 2009 Author Posted May 16, 2009 dont ask me - cant do maths OOOh Hali - your glass is stuck on empty! Not done that before!!!!
Guest Mrs Tiggy Winkle Posted May 16, 2009 Posted May 16, 2009 See the whole glass half full glass half empty thing - I was thinking about this the other day - not sure why ( I believe I was actually sober at the time!) and I concluded that if you pour something into a glass to the half way mark, then it's half full... but if it was full and you drank half, well then it's half empty. Thats my only words of wisdom on the matter of glasses... Now for subitizing... regular patterns make a difference surely to the number you can 'see' at a glance. e.g. if we see two dice each showing six, we know instantly there are 12 dots altogether. Whereas 12 random dots and I think most of us would have to count. Ok that is my lot - I'm off to see what wiki has to say about it all!
Cait Posted May 16, 2009 Author Posted May 16, 2009 Ok that is my lot - I'm off to see what wiki has to say about it all! if you can beyond paragraph 2!
HappyMaz Posted May 17, 2009 Posted May 17, 2009 Maz, you up for it or still suffering with ennui? Oh I shall definintely mention this at some point this week! We have quite a few children who can do it so that would be easy enough to do I think!
HappyMaz Posted May 17, 2009 Posted May 17, 2009 Only thing is, how do you pronounce it? Is it 'sub' or 'soob'. That might depend on your accent, I guess Susie!
Guest Posted May 18, 2009 Posted May 18, 2009 Is it subertise? That's really weird because I was trying to think about what subertising ??? was and couldn't remember the name for number conservation, earlier tonight.
Guest Posted May 18, 2009 Posted May 18, 2009 [quote name='Mrs Tiggy Winkle' date='May 16 2009, 21:13' post='195200' ( I believe I was actually sober at the time!) sober or suber Mrs Tiggywinkle?
Cait Posted May 18, 2009 Author Posted May 18, 2009 Oh I shall definintely mention this at some point this week! We have quite a few children who can do it so that would be easy enough to do I think! Woo I said it today when a little girl just said 'four' straight away when I asked her 'how many?' ('Clever you, you can subitize!)
Motherclanger Posted May 19, 2009 Posted May 19, 2009 Yep I managed to get it in twice on Monday ! Once when the children were playing a game with a die and one boy could look at the die and tell me all the number of spots on each side just by looking at them. Then I explained at our planning meeting what subitizing/subitize means, its funny I always remember words that I haven't come across before. Motherclangerx
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