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
This has been a weird school year. I have no idea what I am doing. Most of my class periods end with me thinking about what a mess it was and how it could have gone better. I am very unorganized. I feel like I've tricked others into thinking I have it together, when in … Continue reading What even IS good teaching?
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 regional Phoenix session
In an effort to be better at sharing quality basic stuff that works, here's how I teach quadrilaterals: I am hesitant to share the files that I use because I've borrowed them from all over the interwebs and at this point I don't even know where to give credit, but here they are! [10/11/16 update: Most … Continue reading A low-tech unit studying quadrilaterals
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
Debate – Chris Luzniak & Mattie Baker “My claim is _____, my warrant is _____ .” Structures: Chalk Talk: Posters with questions on them, students respond by writing, no talking allowed. Talking points: read more here Debate! Argument = claim + warrant Soapbox debate: provide class with a debatable prompt, and a minute to think. Then … Continue reading Twitter Math Camp 2016: Get Uncomfortable
I've tried to explain why AngLegs are a must have for high school geometry and should not only be considered a tool for younger students. Here is an example of how I find them indispensable in teaching triangle congruence. This lesson is adapted from MARS: Evaluating Conditions for Congruency. "Ok class, you are sitting in pairs and at … Continue reading Analyzing Triangle Congruence with AngLegs