Videos and lessons to help Grade 5 students understand that attributes belonging to a category of two-dimensional figures also belong to all subcategories of that category.
For example, all rectangles have four right angles and squares are rectangles, so all squares have four right angles.
Classify two-dimensional figures in a hierarchy based on properties
Common Core: 5.G.3 and 5.G.4
Component Skills from Previous Grades
Understand that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories.
Quadrilaterals - 5.G.3
In this video, students will learn about the relationships between different quadrilaterals. This video relates to Common Core Standard 5.G.3. Students learn specifically the attributes and overlapping subcategories of quadrilaterals.
Which shape is described by the clues below?
The shape has no right angles.
All of the sides are congruent.
The total of its angles is less than 360˚
Use what you know about the attributes of a rectangle to explain why a square is a rectangle
A parallelogram can be a rectangle. Use what you know about parallelogram and rectangle attributes to explain when this is true.