Exploring Quadrilaterals and Their Attributes
Grade 3 Mathematics Understanding Shapes and Their Properties Common Core Standard 3.G.A.1
What I Can Learn Today
I can define and explain vocabulary: attribute, parallel, parallelogram, quadrilateral, rectangle, and rhombus I can identify and draw a quadrilateral with given attributes I can use reasoning skills to differentiate between types of quadrilaterals I can prepare for test questions about quadrilaterals
Key Vocabulary Words
Attribute: A special feature or quality of a shape Parallel: Two lines that stay the same distance apart and never meet Quadrilateral: A shape with 4 straight sides Parallelogram: A quadrilateral with opposite sides parallel Rectangle: A parallelogram with 4 right angles Rhombus: A parallelogram with 4 equal sides
Shape Detective Activity
Look at the shapes around our classroom Find examples of quadrilaterals Count the sides and identify parallel lines Share your discoveries with a partner
Comparing Quadrilaterals
{"left":"All quadrilaterals have 4 sides\nAll quadrilaterals have 4 corners (vertices)\nAll quadrilaterals are closed shapes","right":"Some quadrilaterals have parallel sides\nSome quadrilaterals have equal sides\nSome quadrilaterals have right angles"}
Drawing Challenge
Use your ruler to draw straight lines Draw a quadrilateral with exactly 2 pairs of parallel sides Label the parallel sides with arrows Explain to your partner why your shape meets the requirements
Think and Discuss
Can a rectangle also be called a parallelogram? Why or why not? What makes a rhombus different from a rectangle? How are squares related to rectangles and rhombuses?
Success Check - What Did We Learn?
We can identify quadrilaterals by counting 4 sides We can recognize parallel lines that never meet We can distinguish between rectangles, rhombuses, and parallelograms We can draw shapes with specific attributes We can explain our reasoning about shape properties