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?
Math Curiosity: Magic Triangles
Can you make each side of this triangle add up to 9 using the digits 1-6?
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?
How Many Will There Be? Triangles Within Triangles
A triangle splits and splits and splits again. How many will there be in step 20?
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!?
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?
Deducing the Area of Triangles
Using patterns, students try to deduce where that area formula came from.