The focus of this unit is to help students identify, describe, and reason about the attributes of various quadrilaterals, including parallelograms, rectangles, rhombi, trapezoids, and squares. They will be able to recognize and draw examples and non-examples of quadrilaterals. Students will practice using precise vocabulary to describe and recognize shapes. Students will also learn how to compose and decompose quadrilaterals and triangles.

NC State Standard:

NC.3.G.1- Reason with two-dimensional shapes and their attributes:

• Investigate, describe, and reason about composing triangles and quadrilaterals and decomposing quadrilaterals.
• Recognize and draw examples and non-examples of types of quadrilaterals including rhombuses, rectangles, squares, parallelograms, and trapezoids.

Essential Questions:

1. Why might it be important to recognize non-examples of shapes?
2. In what ways are relationships used in math?

Essential Vocabulary

Videos:

By the end of the unit, students will understand that...

• Shapes have defining attributes.
• Shapes can be used to compose larger shapes or be decomposed into smaller shapes.

Unit 5 Student Handouts