Lesson objective: Classify shapes into categories and subcategories to understand the relationship between attributes.

This lesson provides an opportunity for students to apply their knowledge and understanding of subcategories of two-dimensional figures to a real-life situation. Students are asked to label a diagram of a garden based on the shape of each garden bed.

Key Concept students will use:

- Attributes belonging to a category of two-dimensional shapes also belong to all subcategories of that category.

Skills students will use:

- Shapes in different categories (rhombuses, rectangles, etc.) may share attributes; (Grade 3, Unit 13)
- Objects have geometric properties that allow us to create categories of objects.

Students engage in Mathematical Practice 7 (look for and make use of structure) as they use and create organized structures for categories of shapes to visualize the relationships between different plane figures.

**Key vocabulary: **

- attribute
- parallel
- perpendicular
- quadrilateral
- subcategory