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Maths - Constructions

  • 09-06-2013 9:40am
    #1
    thecrazyninja
    Registered Users, Registered Users 2 Posts: 7 ✭


    Do we need to know all of them by heart? Is there a specific number or range of constructions we need to know?
    Is there a chance that they will not come up in OL?


Comments

  • #2
    Daniel7740
    Closed Accounts Posts: 13,671 ✭✭✭✭Daniel7740


    Do we get a choice between theorems and constructions?


  • #3
    ChromosomeT
    Registered Users, Registered Users 2 Posts: 80 ✭✭ChromosomeT


    my teacher told us just to learn the construction and never mentioned anything about theorems so i'm guessing we do have a choice. However there is people on here saying we've to know both so i'm just really confused by it all now -not what you wan't the day before the exam:pac:


  • #4
    decisions
    Closed Accounts Posts: 8,207 ✭✭✭decisions


    Assuming you are talking about HL, Q6 will have a choice but it there may not be a construction so you may have to prove something. Have you not looked at the sample paper?


  • #5
    Daniel7740
    Closed Accounts Posts: 13,671 ✭✭✭✭Daniel7740


    Will I chance just learning the constructions? I'm looking for an A so I don't want to throw it all away just cause I thought I didn't need to know any theorems


  • #6
    Slow Show
    Registered Users, Registered Users 2 Posts: 4,248 ✭✭✭Slow Show


    Daniel7740 wrote: »
    Will I chance just learning the constructions? I'm looking for an A so I don't want to throw it all away just cause I thought I didn't need to know any theorems

    Learn the theorems tbh! Both a construction and a theorem came up last year as far as I remember.


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  • #7
    decisions
    Closed Accounts Posts: 8,207 ✭✭✭decisions


    Don't be an idiot, there are only 3 theorems just learn them. It could be 25 marks (4%) you're throwing away. Have you looked at last yrs p2?!


  • #8
    Daniel7740
    Closed Accounts Posts: 13,671 ✭✭✭✭Daniel7740


    Last year it was a construction or theorem for OL..what 3 theorems are there for OL?


  • #9
    thegreatescape
    Registered Users, Registered Users 2 Posts: 420 ✭✭thegreatescape


    I'm pretty sure it's a choice, you do either A or B of the question.


  • #10
    sullanefc
    Closed Accounts Posts: 57 ✭✭sullanefc


    Daniel7740 wrote: »
    Last year it was a construction or theorem for OL..what 3 theorems are there for OL?

    You do not have to prove the 3 theorems for OL, just know how to use them. Just learn the constructions. Some of the constructions are done on this website:

    http://www.mathopenref.com/tocs/constructionstoc.html


  • #11
    Daniel7740
    Closed Accounts Posts: 13,671 ✭✭✭✭Daniel7740


    http://www.projectmathshelp.ie/wp-content/uploads/2012/12/project_maths_help_constructions.pdf

    does that mean there are only 2 less constructions to be learned for OL?


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  • #12
    jamo2oo9
    Registered Users, Registered Users 2 Posts: 5,780 ✭✭✭jamo2oo9


    In HL there's definitely a choice between Constructions and Proofs. Our teacher didn't bother with proofs at all and did a bit on constructions. Constructions are very straight forward. Handy if you do DCG!


  • #13
    Leaving Cert Student
    Registered Users, Registered Users 2 Posts: 1,026 ✭✭✭Leaving Cert Student


    jamo2oo9 wrote: »
    In HL there's definitely a choice between Constructions and Proofs. Our teacher didn't bother with proofs at all and did a bit on constructions. Constructions are very straight forward. Handy if you do DCG!
    There wasn't a choice on the mock and isn't a choice in pretty much all the sample papers.


  • #14
    Slow Show
    Registered Users, Registered Users 2 Posts: 4,248 ✭✭✭Slow Show


    I don't get how teachers can say that because on last year's paper there was very clearly a theorem and a construction and no choice (other than 6B). :confused:


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