Home Forums Teacher’s Discussion Forum Rotation symmetry

This topic contains 1 reply, has 7 voices, and was last updated by toni toni 5 years, 6 months ago.

Viewing 8 posts - 1 through 8 (of 8 total)
  • Author
    Posts
  • #1582

    Notemba Conjwa
    Participant

    How can I teach rotation symmetry to my grade 4 learners?

    #1591
    toni
    toni
    Keymaster

    Look for objects with rotational symmetry, like flowers for example, and try to find examples with different symmetries. Take them into class and, as you turn them,  explain rotational symmetry and order of rotational symmetry. Let the learners pass them around and see for themselves.

    Talk about the letter S and N that have rotational symmetry of order 2 and no line symmetry. Work out the symmetries of the other capital letters.

    Look for symmetry in art like the baskets in the attachment. One has rotational symmetry of order 4, two have rotational symmetry of order 6 and the other one looks as if it might have rotational symmetry but it does not. If you can print this picture it makes a good basis for discussion.

    #1676

    Buk Pindani
    Participant

    I didn’t find clearly the difference between lines of symmetry,
    rotational symmetry ,point of rotation. Please can’t you explain it clearly to me?

    #1678

    Anonymous

    Please find a document attached which explains the differences.

    #1687

    Phindy Simani
    Participant

    I can see the centre of rotation when the point is in the shape. How do I see the centre of rotation when it is outside the shape ?

    #1701
    toni
    toni
    Keymaster

    CENTRE OF ROTATION

    In a rotation points move along the arcs of circles. The centre of rotation lies on the perpendicular bisector of the chord joining a point to its image.

    See the attached diagram showing how to find a centre of rotation.

    #2625

    Fezzy Gxothiwe
    Participant

    I too am not confident about the topic and that frustrates me.I am looking foward to the winter residentials so that I can get clarity.

    #2705

    Anonymous

    Hi
    At the top of this page you will find RESOURCES. From the pull down menu choose ONLINE RESOURCES FOLDER. There is a wealth of information there. In the folder called WORKBOOKS FROM IMSTUS- try the SYMMETRY and TRANSFORMATIONS workbook . You’ll find lots of useful ideas without having to wait for the winter residentials.
    Good Luck Christine

Viewing 8 posts - 1 through 8 (of 8 total)

You must be logged in to reply to this topic.

 

Comments are closed.

Set your Twitter account name in your settings to use the TwitterBar Section.