Rolling Cups: Modeling in Geometry

The Rolling Cups task from the Shell Center is a perfect geometry modeling project. I use some form of this task every year for the last three days of the first semester as a final project. This task incorporates constructions, similarity, functions and modeling while pre-assessing students readiness for next semester's content: solids and circles. … Continue reading Rolling Cups: Modeling in Geometry

Pencil sharpeners from Classroom Friendly Supplies

A few weeks ago, what I think is my 10th electric pencil sharpener stopped working. I decided I was done with electric pencil sharpeners and began a search to find a reliable, quiet, affordable pencil sharpener. I found this pencil sharpener from Classroom Friendly Supplies, and I discovered that they would send me one in exchange for … Continue reading Pencil sharpeners from Classroom Friendly Supplies

My NCTM regionals Phoenix session

I presented at NCTM's regional conference in Phoenix a few weeks ago on reasons to develop and use effective warm up routines. Here is the blurb on the session: Warm-Up Routines: Developing Mindset While Enhancing Math Understanding Warm-up activities can maximize class time, set class culture, develop growth mindset in students and fill gaps, or … Continue reading My NCTM regionals Phoenix session

Geometry Planning Guide

Click here to access and comment on the Geometry Planning guide Units: Constructions Congruence Transformations & Similarity Right triangles & Coordinate Proof Applied Trigonometry & Solids Circles In the spirit of Geoff Krall's Problem Based Curriculum Maps, I attempted to organize my geometry curriculum and learning targets along with associated activities, tasks & lessons. In order … Continue reading Geometry Planning Guide