Exploring Shapes and Their Attributes
Grade 4 Mathematics Understanding Polygons and Their Properties
Learning Objectives - I Can Statements
I can identify and name different polygons I can describe the attributes of shapes using math vocabulary I can explain what makes shapes similar or different I can draw shapes with specific attributes
Success Criteria
I can correctly name triangles, rectangles, pentagons, and hexagons I can count sides and angles accurately I can use vocabulary words like parallel, quadrilateral, and attribute I can explain my reasoning when describing shapes
What Do You Already Know?
Turn and talk to your partner: What shapes do you see around our classroom? What do you notice about these shapes?
Key Vocabulary: Attribute
Attribute: A special feature or quality of a shape Examples: number of sides, number of angles, parallel lines Every shape has different attributes that make it unique
Shape Detective Activity
Look at the triangle on the screen Count the sides with your finger Count the angles What attributes do you notice?
Rectangle Investigation
Look at this rectangle How many sides does it have? How many right angles can you find? What do you notice about opposite sides?
Key Vocabulary: Parallel Lines
Parallel: Two lines that stay the same distance apart Parallel lines never meet or touch Look for parallel lines in rectangles and other shapes
Quadrilaterals - The Four-Sided Family
Quadrilateral: Any shape with 4 straight sides All rectangles are quadrilaterals All squares are quadrilaterals Parallelograms and rhombi are quadrilaterals too!
Comparing Quadrilaterals
{"left":"Rectangle: 4 right angles, opposite sides parallel\nSquare: 4 right angles, all sides equal","right":"Parallelogram: opposite sides parallel\nRhombus: all sides equal, opposite sides parallel"}
Pentagon and Hexagon Hunt
Pentagon: 5 sides, 5 angles Hexagon: 6 sides, 6 angles Practice counting sides and angles Can you draw these shapes?
EOG Practice Question
Draw a quadrilateral with at least one pair of parallel sides Explain your reasoning in words What attributes does your shape have?
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