## Blackhawk Vector Problem

A Nebraska National Guard helicopter maneuvers Saturday morning to place sandbags near a city of Lincoln well on an island of the flood-ravaged Platte River. State of Nebraska, Courtesy photo I avoided making [...]

## Quadrilaterals

Several years of work are coming together nicely. Unfortunately, I still have tests to grade. There are so many properties for students to know and remember in the quadrilaterals unit of Geometry. I started by [...]

## Trig Hexaflexagon

My honors precalculus students saw the slope hexaflexagons my geometry students were using and asked when they would get something like that. I promised when we reached our trig unit, I'd whip something up. Below [...]

## Squares and Square Roots

I was thinking about a way to make square roots more visual for my students. With graph paper, I started sketching out the perfect squares and then played with numbers that form rectangles rather than [...]