standard_description: 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.
problem_activity: Task
Julius has 4 blue marbles.  If one third of Julius' marbles are blue,
how many marbles does Julius have?  Draw a diagram and explain.


aligns: no