What’s In My Brain: H vs Arrow

Two columns. One is an example, one isn’t. Can you figure out the hidden rule before the big reveal?

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?

Letters With Symmetry

Let’s group letters by their symmetry, then create symmetrical words, and then symmetrical sentences!

Geometry Image: Esplanade Theaters

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

Geometry Image: University Ave

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

Geometry Image: Victoria Conference Center

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

Geometry Image: Skytree

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

Geometry Image: Steigerwald

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?

Same Perimeter, Different Area For Rectangles

Can two rectangles have the same perimeter but… different areas!?

Intersecting Angles and Streets

There can never be just one angle.

The Angles of a Triangle

Why tell a kid the rules of a triangle when they can discover them!?

Grouping Quadrilaterals In A Hierarchy

Can we classify quadrilaterals like we classify living things?

Finding The Volume of Laptops

How has the volume of laptops changed over time? You know you want to check out how huge those first versions were!