An interesting thing happened today. A girl I was working with, who’s had virtually no schooling in geometry, made a brilliant “leap” in a geometry problem. This student was starting a unit on fractions, and the curriculum was describing a standard way of conceptualizing fractions. The book was showing that if you divide a given […]

# Archive | Using Color in Geometry

# New GEOMETRY Product on Horizon

New Geometry product on horizon from Singing Turtle Press. Math author Josh Rappaport is coming out with an eBook on geometry. Read this post to find out more!

# James Bond Math Challenge

Take this informal quiz. Watch this clip from a James Bond movie, and see what math themes and patterns you can find in the art and visuals. Then drop me a comment. I’ll share all comments that make reasonable statements.

# Rubik’s Slide: play your way to geometric knowledge

The people who gave us the Rubik’s Cube recently came out with another fun puzzle, the Rubik’s Slide. This post tells all about this fun puzzle, which actually helps students learn some geometric concepts.

# Using Color to Show Perimeter

Using color can illuminate math concepts. Here’s a quick example showing how color can bring to light a shortcut in a perimeter problem.

# Tutor Tales #1: Color in Geometry

High school geometry can have all kinds of tricky problems. But if you use different colors when you set up the problem you can often make a tough problem much easier. Here’s an example of how using color helped a girl find the total number of diagonals in a regular convex nonagon.