DIRECTIONS:

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DIRECTIONS Please become familiar with the
buttons below before beginning the program.
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Click on this button to move forward in the
program.
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you visited.
Click on the picture of the house to go to the
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Line Symmetry
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Lets learn about line symmetry!
Please explore the links below in the order they
are listed. Click on the first one to get
started!
1. What is line symmetry? 2. Where can we find
objects with line symmetry? 3. Can we find
symmetry in the animal kingdom? 4. Are there
ways to check for line symmetry? 5. Test Your
Line Symmetry Knowledge 6. On-line Symmetry
Activity
This is the HOME slide.
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What is line symmetry?
Line Symmetry We say that something has line
symmetry if it can be folded on a line so that
its two parts are exactly the same.
Example
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In other words, a shape has line symmetry when
one halfof it is the mirror image of the other
half.
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Check out more examples of line symmetry !
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Lines of symmetry must be straight lines. These
straight lines can be drawn in many directions,
as long as the parts on each side of the line are
exactly the same.
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1
2
Some objects may even have more than one line of
symmetry.
1
2
1
2
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Symmetry Around Us
Line symmetry exists all around us. Many
everyday objects have line symmetry. Many
people see it as being a thing of beauty. Can
you identify these every day objects with line
symmetry ?
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Symmetry Around Us
Check out more examples of line symmetry in the
world around us!
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Symmetry In the Animal Kingdom
In the animal kingdom, line symmetry not only
produces beauty, but it also helps animals
function efficiently.
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Something to Think About
Would this butterfly look as beautiful and fly
as gracefully if both of its wings were different?
line of symmetry
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Check out more examples of line
symmetry in the animal kingdom! What others can
you think of?
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Did You Mention Humans?
Human beings are also animals. Did you know we
also have a line of symmetry that runs down the
middle of our bodies? Look at a classmates
face. Can you see an imaginary line of symmetry?
Notice how both sides of this womans face are
the same.
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How to Find Line Symmetry
Sometimes its easy to look at an object and
decide if it has line symmetry. Other times,
it can be much more difficult to tell.
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How to Find Line Symmetry
To help us decide if an object has line
symmetry, we can use the trace and fold method.
Click on the photo to watch a video demonstration.
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Test Your Line Symmetry Knowledge
Lets see what you know about line symmetry.
Click on the butterfly to find out!
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Click on the picture that shows a line of
symmetry.
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Click on the object that has line symmetry.
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Click on the object that has line symmetry.
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Click on the object that has line symmetry.
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Click on the object that has line symmetry.
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Click on the object that has line symmetry.
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Click on the object that has line symmetry.
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That's Correct !
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Sorry, try again.
This object CANNOT be folded on a line so that
its two parts are exactly the same. The toe would
be sticking out on one side and not on the other.
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Not quite.
This object CANNOT be folded on a line so that
its two parts are exactly the same. Can you see
the difference?
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Great job!
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Good try.
This object CANNOT be folded on a line so that
its two parts are exactly the same. A flower
sticks out on one side of the clowns hat and not
on the other. His mouth is also shaped
differently on each side.
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Sorry, that's incorrect.
This object CANNOT be folded on a line so that
its two parts are exactly the same. Can you see
the difference?
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Super!
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That's not the one.
This object CANNOT be folded on a line so that
its two parts are exactly the same. A handle
sticks out on one side of the mug and not on the
other.
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Sorry, try again.
This object CANNOT be folded on a line so that
its two parts are exactly the same. The front and
back of this car look very different.
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Excellent!
This flag of Japan actually has 2 lines of
symmetry.
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Try again.
This object CANNOT be folded on a line so that
its two parts are exactly the same. Can you see
the difference? Stars appear on one side and not
on the other.
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Not exactly.
This object CANNOT be folded on a line so that
its two parts are exactly the same. Can you see
the difference?
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That's it!
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Sorry, try again.
This object CANNOT be folded on a line so that
its two parts are exactly the same. Teeth only
appear on one side of the comb.
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No, this isn't the one.
This object CANNOT be folded on a line so that
its two parts are exactly the same. Can you see
the difference?
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Wonderful!
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That's incorrect.
This object CANNOT be folded on a line so that
its two parts are exactly the same. Can you see
the difference?
Back
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Sorry, try again.
This object CANNOT be folded on a line so that
its two parts are exactly the same. It looks like
the cat is holding a horn in one hand and not the
other.
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Nice work!
You remembered that humans have a line of
symmetry down the middle of their bodies.
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Sorry, try again.
This object CANNOT be folded on a line so that
its two parts are exactly the same. It looks
like the bananas are sticking out in different
places on each side.
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Not quite.
This object CANNOT be folded on a line so that
its two parts are exactly the same. Notice
how there is a cone below the line and not above
the line.
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Click on the link below to complete an online
symmetry activity. Please print your completed
project. Have fun!
SYMMETRY ACTIVITY
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It looks like youre a line symmetry expert.

Way to go!
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Name Abbey Flick Grade 2 Subject
Mathematics School Central Columbia Elementary
School School District Central Columbia School
District Lesson Title Line Symmetry
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