What’s In My Brain: Pentagon vs Pentagon

We’re looking at regular vs irregular polygons.

Grouping Shapes by Parallel and Perpendicular Sides

Which shapes go together based on parallel and perpendicular lines?

Geometry Image: University Ave

What odd and interesting shapes can your students find in this geometric image?

What’s In My Brain: Trapezoids or Not?

Which are trapezoids and which are not?

Grouping Quadrilaterals In A Hierarchy

Can we classify quadrilaterals like we classify living things?