It is currently Sat Dec 03, 2016 4:42 am

 All times are UTC

 Page 1 of 1 [ 2 posts ]
 Print view Previous topic | Next topic
Author Message
 Post subject: At the risk ofPosted: Mon Sep 17, 2007 1:01 pm
At the risk of making myself look dense....I'm happy to post this should it help other parents.
My daughter started this term in Yr 7 at her new Grammar school. Last week she brought home her first batch of maths homework. Knowing I love maths she asked me the first question. 3--2, that's easy I said it's 1. She burst out lughing and said no, it's 5. Why is it 5? I asked. Because 2 minuses make a plus, she said. Why do they? I asked. I dunno, she said, they just do.
At work the following day (worryingly, in finance) I asked my colleagues what's 3--2? Only 1 gave the correct answer. Why is it 5? I asked. Because 2 minuses make a plus, he replied. Why do they? I asked. I dunno, they just do, he said.
On friday my daughter came home from school and said, Mummy I asked my maths teacher to explain the 2 minuses to me in words that you could understand. (thanks babe). She said if you had a bowl of water with an ice cube in it and the temperature of the water was 3 degrees, and the temperature of the ice cube was -2 degrees, what would the temperature of the water be if you took out the ice cube? Er 5. Yippee I get it now.

Top

 Post subject: Re: At the risk ofPosted: Mon Sep 17, 2007 5:07 pm

Joined: Wed May 09, 2007 2:09 pm
Posts: 874
Location: Solihull, West Midlands
Suzie Q wrote:
She said if you had a bowl of water with an ice cube in it and the temperature of the water was 3 degrees, and the temperature of the ice cube was -2 degrees, what would the temperature of the water be if you took out the ice cube? Er 5. Yippee I get it now.

Don't think the example as quoted is accurate as a physical example: perhaps how it should be phrased is "by how many degrees does the ice cube need to warm up to be the same temperature as the water ? "

Another way to look at it could be floors in a lift: you're on floor 3: how many floors down is it to the 2nd basement?

Top

 Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending
 Page 1 of 1 [ 2 posts ]

 All times are UTC

#### Who is online

Users browsing this forum: No registered users and 2 guests

 You cannot post new topics in this forumYou cannot reply to topics in this forumYou cannot edit your posts in this forumYou cannot delete your posts in this forumYou cannot post attachments in this forum

Search for:
 Jump to:  Select a forum ------------------ FORUM RULES    Forum Rules and FAQs 11 PLUS SUBJECTS    VERBAL REASONING    MATHS    ENGLISH    NON-VERBAL REASONING    CEM 11 Plus GENERAL    GENERAL 11 PLUS TOPICS    11 PLUS APPEALS    11 PLUS TUTORS    INDEPENDENT SCHOOLS    11 PLUS CDs/SOFTWARE    11 PLUS TIPS    PRIMARY    SEN and the 11 PLUS    EVERYTHING ELSE .... 11 PLUS REGIONS    Berkshire    Bexley and Bromley    Birmingham, Walsall, Wolverhampton and Wrekin    Buckinghamshire    Devon    Dorset    Essex    Essex - Redbridge    Gloucestershire    Hertfordshire (South West)    Hertfordshire (Other and North London)    Kent    Lancashire & Cumbria    Lincolnshire    Medway    Northern Ireland    Surrey (Sutton, Kingston and Wandsworth)    Trafford    Warwickshire    Wiltshire    Wirral    Yorkshire BEYOND 11 PLUS    Beyond 11 Plus - General    GCSEs    6th Form    University