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PostPosted: Sat Jan 09, 2016 5:49 pm 
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Joined: Sat Jan 09, 2016 5:45 pm
Posts: 60
I was wondering if someone could give some advice on when to use trial and error to answer in a wordy maths questions and when Algebra is more efficient?

Thanks!


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PostPosted: Sat Jan 09, 2016 6:53 pm 
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I am sure that there will be professionals along in a while, but imho I would say trial and error is not the best way. Unless you mean using an "educated guess" first and working from there? If DC has a good knowledge of algebra then that would be the way to go I suspect. But I will leave the real advice to the experts...


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PostPosted: Sat Jan 09, 2016 7:12 pm 
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Joined: Mon Feb 12, 2007 1:21 pm
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Trial and improvement is usually the better approach e.g. in that triangle question posted recently. Algebraic equations aren't in KS2 so shouldn't be required.


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PostPosted: Sat Jan 09, 2016 7:28 pm 
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Joined: Fri Oct 12, 2007 12:42 pm
Posts: 3813
Location: Chelmsford and pleased
The algebra from the national curriculum in year 6 is:
6A1 express missing number problems algebraically
6A2 use simple formulae
6A3 generate and describe linear number sequences
6A4 find pairs of numbers that satisfy an equation with two unknowns
6A5 enumerate possibilities of combinations of two variables

I teach children to 'bar model' rather than use algebra. It is a clear method that allows children to see visually without the need for complex algebraic equations.


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PostPosted: Sun Jan 10, 2016 6:36 am 
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Joined: Sat Jan 09, 2016 5:45 pm
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Thanks for the feedback. I will just stick with the trial and error method for now then.


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