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 Post subject: River crossing problemPosted: Sun Sep 19, 2010 8:50 pm

Joined: Thu Apr 08, 2010 10:28 pm
Posts: 95
Location: London
Hi, please could anyone help me on this question.

Two soldiers needed to cross a river.Nearby two girls were rowing a small boat.
The soldiers asked the girls to help them to cross the river. The boat was so small that it could only carry one adult or two children.Explain how the two soldiers and two girls reached the other side of the river.This should go on a sequence pattern.

Thank you

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 Post subject: Re: maths sequencePosted: Sun Sep 19, 2010 8:56 pm
I think it would be that the girls rowed to the other side of the river & dropped off one girl & the other rowed back to the soldiers. Then one soldier would row over & the one girl on that side would row back. Then it repeats - both girls row over, drop one off , the other rows back, swaps with the second soldier who rows over. The girl on that side then rows back over to her friend.

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 Post subject: Re: maths sequencePosted: Mon Sep 20, 2010 9:05 am

Joined: Mon Jun 18, 2007 2:32 pm
Posts: 6966
Location: East Kent
I hate questions like that!

diagrams help or maybe using counters - different colour for soldiers and girls- and working it out -record steps as it will help when you go wrong!

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 Post subject: Re: maths sequencePosted: Mon Sep 20, 2010 10:36 am

Joined: Thu Apr 08, 2010 10:28 pm
Posts: 95
Location: London
Thank you very much rosered100 and yoyo123

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 Post subject: Re: River crossing problemPosted: Fri Oct 01, 2010 11:34 am

Joined: Sat May 30, 2009 12:06 pm
Posts: 2093
Location: Birmingham
This really reminded me of last term when my car broke and I only had a 5 seater (and 5 children on the school run)... looking back at least working it all out legally gave the children some 11 plus practise

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 Post subject: Re: River crossing problemPosted: Mon Oct 11, 2010 8:48 pm

Joined: Fri Oct 12, 2007 12:42 pm
Posts: 3813
I love these problems - there is a lovely game with frogs and lily pads on mymaths. Or the marvellous Professor Layton on the DSi. I've ordered the next one already, but my children seem to think that I can wait until Christmas!

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