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 Post subject: Can anyone help, brain in gear needed!!Posted: Tue Nov 27, 2007 1:53 pm

Joined: Mon Jun 18, 2007 2:32 pm
Posts: 6938
Location: East Kent
http://tre.ngfl.gov.uk/uploads/material ... 20able.doc

Did this today, the children quickly got teh idea that each time you add another table you get 2 more places, but we were all a bit stumped on finding a formula so that one could immediately say 'n' tables..'x' pupils.

I just grabbed the investigation as I was called in to teach at very short notice and I had to admit I had not worked it out first as I normally do I think I must have left my brain at home

There is obviously some relationship between teh number of seats you lose by putting tables together and the number you gain.

I have promised the y6 class I will et them know. So can you help me save face please!

Thank you in advance.

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 Post subject: Posted: Tue Nov 27, 2007 2:06 pm

Joined: Tue Dec 13, 2005 12:49 pm
Posts: 1647
Location: berkshire
The formula is..... pupils = 2(number of tables) + 6

ie. p = 2n+6

Each arrangement of tables has 6 pupils + 2 pupils on the ends. therefore the number of 'pupils' will increase by 2 for each table added.

Not explained very well I know but I just seem to 'see' these.

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 Post subject: Posted: Tue Nov 27, 2007 2:10 pm

Joined: Mon Jun 18, 2007 2:32 pm
Posts: 6938
Location: East Kent
My hero!

Thank you SOOO much, we kept skirting round the six and two but never quite getting there . there are some days when thinking on your feet doesn't work.....

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 Post subject: Posted: Tue Nov 27, 2007 3:17 pm

Joined: Mon Jun 18, 2007 2:32 pm
Posts: 6938
Location: East Kent
sitting down withot 32 children bellowing in my ear I have just realised this is a lot simpler than it seemed in teh heat of battle.

Thank you once again

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