3rd Grade Math Centers

(Marvins-Underground-K-12) #1

Classify Shapes Using a Venn Diagram


Materials: set of shape cards, rulers





  1. Work with a partner. Sort a set of shape cards using a Venn diagram
    with one circle labeled Quadrilateralsand the other circle labeled
    Polygons with Sides of Equal Length.

  2. Record your sort. Draw and label the shapes in each section of your
    Venn diagram. Draw the shapes that do not belong in either category
    outside of the circle.

  3. Next, sort the set of shape cards usinga Venn diagram with one circle
    labeled Quadrilateralsand the other circle labeled Polygons with Right
    Angles.

  4. Record your sort. Draw and label the shapes in each section of your
    Venn diagram. Draw the shapes that do not belong in either category
    outside of the circle.

  5. Why do some shapes fit into both categories? Explain why the shapes
    you drew in the overlapping sections on your Venn diagram belong to
    both groups.

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