Geometry

Angles, polygons, spirals, and circles.
A rectangle made of 12 teal-colored kites, four pink right triangles, and four blue diamonds in an arrangement that has both horizontal and vertical lines of symmetry.
A 21st Century Challenge

A 21st Century Challenge

After seeing Hana Murray's lovely study of rectangles made from 21st Century Pattern Blocks, I started playing and noticed that many of them seemed to involve the small green triangles. Pretty soon, I had formed a conjecture. Using copies of these at least two...

Talking Shapes with Kids

Talking Shapes with Kids

I have been spending time talking with kindergarteners, first and second graders in schools about my shapes book (coming from Stenhouse, Spring 2016). Many more school visits are ahead of me. I have written up some reflections for a more teacher-ish audience than...

Fun with tiles

Fun with tiles

It is no secret that one of my proudest achievements is creating a lovely space on Twitter where people share stories of children's math talk. Come read along on the #tmwyk hashtag. That's where I came across this tutorial-in-photos. I decided to make myself some....

Spirals

Spirals

A few weeks back, this short cryptic video came to my attention thanks to the magic of Twitter. https://vine.co/v/MMEJuOXYndP Thanks to kids connect (@KinderFynes on Twitter) For more than a year now, I have been posting links and other short bits on Twitter using...