Getting to know the shapes
http://illuminations.nctm.org/LessonDetail.aspx?ID=L650
A lesson plan for grade 3 Mathematics
In this lesson, students discover the uses of geometry and measurement in the world of architecture as they are introduced to the clubhouse project. After reading How a House is Built by Gail Gibbons and Building a House by Byron Barton, students sort plane and solid figures using an activity sheet. Then, students explore vocabulary relating to two- and three-dimensional shapes. Finally, students locate all geometric shapes using architectural drawings and discuss how they would design their dream clubhouse. Illuminations provides activity sheets, detailed instructions, and suggestions for texts to be used with the lesson.
Students will:
- Classify two- and three-dimensional shapes according to their properties and develop definitions of classes of shapes such as triangles and pyramids by sorting pictures or solids into two categories.
- Identify two-dimensional and three-dimensional shapes in real life architectures.
- Identify, compare, and analyze attributes of two- and three-dimensional shapes and develop vocabulary.
NCTM Standards and Expectations:
- Classify two- and three-dimensional shapes according to their properties and develop definitions of classes of shapes such as triangles and pyramids.
- Identify, compare, and analyze attributes of two- and three-dimensional shapes and develop vocabulary to describe the attributes.
North Carolina Curriculum Alignment
Mathematics (2004)
Grade 3
- Goal 3: Geometry - The learner will recognize and use basic geometric properties of two- and three-dimensional figures.
- Objective 3.01: Use appropriate vocabulary to compare, describe, and classify two- and three-dimensional figures.


