Lesson plan

# 10. Classify shapes into categories (A)

teaches Common Core State Standards CCSS.Math.Content.3.G.A.1 http://corestandards.org/Math/Content/3/G/A/1
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7

## You have saved this lesson plan!

Here's where you can access your saved items.

Dismiss

Lesson objective: Understand that shapes may share some attributes with other shapes in different categories.

This lesson provides an opportunity for students to apply their knowledge and understanding of common attributes to a mathematical situation. Students are asked to assess whether a shape fits into a category based on the attributes of the shape.

Key Concept students will use:

• all rhombuses, rectangles and squares are examples of quadrilaterals, but not all quadrilaterals fit in those subcategories

Skills students will use:

• reasoning with shapes and their attributes; (Grade 2, Unit 10)
• recognizing and drawing shapes with specified attributes, such as a given number of angles or a given number of equal faces; (Grade 2, Unit 10)
• identifying triangles, quadrilaterals, pentagons, hexagons, and cubes; (Grade 2, unit 10)

Students engage in Mathematical Practice 7 (look for and make use of structure)  as they determine categories and subcategories of shapes by identifying and reasoning about their attributes.

Key vocabulary:

• attribute