The California Association of Independent Schools will be holding its every-other-year Northern California Regional Meeting on March 11 in Oakland. If you work at a member school, I may see you there. Here is what I plan to do that day:Session 1: I will join Laura Hawkins, who succeeded me as math department chair at… Continue reading CAIS North
Tag: Geometry
Mathematics Overview
I have written an outline of one possible version of the foundational topics of secondary school math, covering key concepts usually taught in grades 7 to 10. The idea was to write a one-year review course for seniors who have had trouble with math up to that point, but still intend to go to a… Continue reading Mathematics Overview
Function Diagram Slides
I posted slides from last Saturday's talk about function diagrams on my Web site. I don't imagine they'll be that useful, unless you want to use them in one of your presentations, but on the same page you can read the article the presentation was largely based on, and find links to many PDFs, animations,… Continue reading Function Diagram Slides
Polyomino Lessons
I just uploaded a book of Polyomino Lessons to my Web site. The book first came out in 1986, and has long been out of print. It includes a wide range of puzzles and activities for middle and high school, mostly carried out on grid paper.Here are some solutions to one of the puzzles: One… Continue reading Polyomino Lessons
Bay Area Circle for Teachers
I will present an overview of the mathematics and pedagogy of function diagrams at the Winter Workshop of the Bay Area Circle for Teachers, on Saturday, January 26, in Jack London Square in Oakland, CA. Function diagrams are also known as the parallel axes representation, and a computer version is sometimes called "dynagraph". There's a… Continue reading Bay Area Circle for Teachers
Manipulatives update
As larger publishers swallow smaller ones, educational materials with a smaller market tend to be removed from the market. As an author, I have been a victim of this economic reality for quite some time now. However today I have some good news on that front.My book Geometry Labs was originally published by Key Curriculum… Continue reading Manipulatives update
Using interactive geometry
This is the final post of my report on the Asilomar conference. (To read the whole set, start here.)I made a cameo appearance in my colleague Scott Nelson's presentation on how using computer software intelligently has made his Analytic Geometry course vastly more accessible. I loved his presentation. (If you teach in a member school… Continue reading Using interactive geometry
The third dimension!
This is another post about sessions I attended last weekend at the Asilomar Northern California CMC conference. (To read the whole set, start here.)Kevin Rees presented two variations on a classic volume optimization problem. In the traditional problem, you start with a square piece of cardboard, cut off congruent squares at the four corners, and… Continue reading The third dimension!
Puzzles in math education
Scott Kim, the author of the excellent Inversions, is launching a crusade to bring more puzzles to math education. He gave a talk on this subject at the Gathering 4 Gardner. (See the slides.) Martin Gardner, of course, is the author of the long-running Mathematical Games column in Scientific American. He inspired who knows how… Continue reading Puzzles in math education
Early Bird Discount
About three months ago, I mentioned my summer workshops for teachers and summarized how they will differ from their previous incarnations.Brief recap:- Hands-On Geometry, June 18-21 in San Francisco- Visual Algebra, August 13-15 in New York City- Re-imagining High School Math, August 16-17 in New York CityThe workshops are sponsored by the Center for Innovative… Continue reading Early Bird Discount
Henri's Math Education Blog 