4A 7-2 slides: Intro to Symmetry
-
Upload
muhammad-fawaz -
Category
Education
-
view
659 -
download
2
Transcript of 4A 7-2 slides: Intro to Symmetry
SYMMETRYSYMMETRY
WALT
• What a symmetric figure is• How to identify a line of symmetry• State what happens when you fold a
symmetric object about its line of symmetry
These are symmetric figures
What you see are lines of symmetry
The halves along the line are mirror images of each other
I like to fold it, fold it
• Your worksheet is rectangular in shape.
• Fold it into two symmetric halves.
CAN YOU IMAGINE IT?
SHOW ME WHACHU GAHT
Which figures are symmetric?
a b c d e f
$
Ans: a, d, e
a b c d e f
$
Ma MPAH WB Pg 111: Which figures are symmetric?
Ans: B, D, E, F, G, H
Ma MPAH WB Pg 112: Which figures are symmetric?
Ans: A, C, D
• In your pairs, make a list of at least 10 examples of everyday symmetrical objects
• Pick 5 and draw them along with their lines of symmetry
Let’s hear from some of you
Now it’s time to…
The dotted lines divide these figures into equal halves, but they are not lines of symmetry.Can you explain why?
The two parts do not fit exactly when folded along the dotted line.
In which figure(s) is the dotted line a line of symmetry?
a b c d e
Ans: b, d, e
a b c d e
Now that we totally understand what symmetry is, we can MAKE a
piece of art that is symmetric
Time for an activity
In your PAIRS• Make one SYMMETRIC shape
• Make one NON-SYMMETRIC shape
Followed by: MPAH Ma WB Pg 113-114