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After watching the video "Types of Lines of Symmetry" we will have a class discussion about  it. At this time I want everyone to get a partner and or talk at your tables about what you think in the classroom has lines of symmetry. You can write them down on a paper and then wait for the rest of the class. When everyone is done we will then get a piece of poster paper and share. I will call individuals from each table to share what their partner or table came up with and then finish up with the definition  for symmetry and the different kinds of lines.

I am hoping our class paper will look something similar to this.

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Symmetry Anchor Chart: great way to make connections to everyday life.

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Where do we use symmetry?
Symmetry is used in everyday objects such as:
-art pieces
-sculptures
-paintings
-facial symmetry
-architecture (buildings)

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If you can understand Symmetry and the lines of symmetry then you'll be able to use it in a possible art class in the future. Or you may want to be an artist or architect and will need it in your career. We use symmetry to help get balance and unity out of things and that will never go away.

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Before we watch a video explaining the Symmetry and the lines of symmetry I would like everyone to do this worksheet to see what  you may already know.

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- Math, Icon. “Types of Lines of Symmetry .” YouTube, YouTube, 2 Feb. 2016, www.youtube.com/watch?v.

- Brading, Katherine, and Elena Castellani. “Symmetry and Symmetry Breaking.” Stanford Encyclopedia of Philosophy, Stanford University, 24 July 2003, plato.stanford.edu/entries/symmetry-breaking/.

-“Standards: Mathematics.” Standards: Mathematics - K-12 Standards Section - Arizona Department of Education, www.azed.gov/standards-practices/k-12standards/mathematics-standards/. N.P.,N.D. Web.
12 Dec 2017

- n., p. “Fabulous Fourth Grade.” Pinterest, N.p., 22 Jan. 2017, www.pinterest.com/pin/212935888612549899/.

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Symmetry- the quality of being made up of exactly similar parts.
Line of Symmetry-  imaginary line that splits two identical halves.
Vertical Line of Symmetry- line of symmetry from top to bottom.
Horizontal Line of Symmetry- line of symmetry that goes from right to left.
Diagonal Line of Symmetry- line of symmetry that goes corner to corner.

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While some concepts of symmetry can go back to Galileo and Newton, symmetry comes from the Greeks. The Greek words sun means together and metron means measure. From this it was then related to harmony, beauty, and unity and was used by the Greeks and Romans.

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Hello students, today we will be talking about Symmetry. A few things we will cover is, What is symmetry, How do we find it and What do we use it for? Let's get started.

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4.G.A.3. - Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify line-symmetric figures and draw lines of symmetry.

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You will be able to recognize and draw lines of symmetry.