Erin Jolly

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Geometry

• Erin Jolly
• Kennesaw State University

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Table of Contents

• Hexagons
• Octagons
• Polygon Review
• Geometry in the Real World
• Graph of Shapes in the Room
• Tangrams
• Tangram Movie
• Tangram Game
• Tangram Activity
• Did You Like the Activity?

• Connection to National Standards
• Points, Lines, Segments, and Rays
• Angles
• Polygons
• Distinguishing
• Characteristics
• Triangles
• Quadrilaterals
• Pentagons

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Connection to National Standards

• 4th Grade Geometry PS11 FIGURES IN SPACE The
  learner will be able to classify and apply
  attributes of geometric shapes.   
• M.4.11.1 Figures Make Models/Sort The
  learner will be able to make models of plane and
  solid figures (such as triangles, quadrilaterals,
  circles, cones, cylinders, and rectangular
  prisms) and sort and classify models according to
  distinguishing characteristics such as sides,
  angles, lines of symmetry, faces, and edges.   
• M.4.11.2 Points/Lines/Angles Identify The
  learner will be able to identify and distinguish
  among points, lines, line segments, rays, and
  angles.

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Points, Lines, Segments, and Rays
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Angles
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Polygons

• A polygon is a closed plane figure (2
  dimensional) made up of line segments that are
  connected.

NO
This figure is not closed.
This figure has all of the requirements.
YES
This figure is not made up of line segments.
NO
This figure has all of the requirements.
YES
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Distinguishing Characteristics

• 1. Side a line segment that is part of a
  polygon

2. Angle two rays with a common endpoint
3. line of symmetry a line on which a figure
can be folded so that both sides match
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Triangles

• Polygons with three sides are..

TRIANGLES
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Quadrilaterals

• Quadrilaterals are four sided polygons.

PARALLELOGRAM
SQUARE
RECTANGLE
Do you recognize any of these?
TRAPAZOID
DIAMOND
Here are some new terms!
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Pentagons

• Pentagons are five sided polygons.

Does this look familiar?
Thats Right!
HOME PLATE
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Hexagons

• Hexagons are six sided polygons.

1
2
6
3
5
4
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Octagons

• Octagons are eight sided polygons.
• Does the word octagon remind you of any other
  word?

An Octopus has 8 legs!
How many legs?
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Polygon Review
Click here for extra review
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Geometry in the Real World
What do you see?
Do you see any triangles?
Do you see an quadrilaterals?
Do you see any octagons?
Do you see any parallel lines?
Click the arrow if you need to review
What else do you see?
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Graph of Shapes in the Room
We can graph the shapes in our room
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Tangrams

• Tangrams can help you learn geometry.
• It is an ancient game that originated in China.
• You create pictures using geometric shapes like
  triangles, squares, etc.

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Tangram Movie

• Watch this movie to learn more about tangrams.

Click the movie button to play!
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Tangram Game

• Play this game to build your own tangram!
• Click here for a
• fun tangram game

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Tangram Activity(Integrates Math, Science, and
Writing)
1.) Take a set of classroom tangrams. 2.) Make a
creative animal with your tangrams. 3.) Trace
your shapes, so you have a picture when you
remove the tangram pieces. 4.) Make a chart
classifying your shapes. 5.) Write a paragraph
about your animal answering the following
questions What is the name of your
animal? What does your animal eat? What is
your animals habitat What special things can
your animal do (ex. Fly, swim, change color,
etc.)? 6.) See if a partner can make your animal
with the tangram pieces.
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Did You Like the Activity?
Opinion Pie Chart