My book Geometry Labs is now available for free download on my Web site.Whew! It was a bit of work to get it ready.--HenriPS: In addition to the book itself, I'll be adding links to revisions and extensions of the labs. So far, a revision of the rep-tile lab, and an extension of the soccer… Continue reading Geometry Labs
Tag: Geometry
Escape! meeting notes 2 — Miras
Notes from the Fall Bay Area meeting of Escape from the Textbook! (continued)back to Part 1 Carlos Cabana challenged us to think of uses for Miras, and for tangrams.Having done a lot with tangrams over the years, I chose to work on Miras. I have a class set of those at school but have not… Continue reading Escape! meeting notes 2 — Miras
My Summer Plans
Where you can find me this summer:June 20-22: Independent Curriculum Group conference, San FranciscoBuilding an Innovative Curriculum: Strategies for Teachers, Departments, and Schools (Scroll down until you see this text)I'll participate, and perhaps present something on teacher collaboration. June 22-24: Center for Innovative Teaching, San FranciscoIntegrated Technology Symposium 2011 for School Leaders: Digital Tools & Practices… Continue reading My Summer Plans
My MA thesis
A few weeks ago, I attended a wonderful talk about the real projective plane by Bruce Cohen and David Sklar. This reminded me that 40 years ago, or so, I wrote an MA thesis at UC Berkeley on Topics in finite projective geometry. I just scanned it and uploaded it to my Web site on… Continue reading My MA thesis
Yet again, more kinesthetics!
If you search for "kinesthetic" on this blog, you'll see a series of posts about kinesthetic activities to help teach various concepts. I will eventually combine all of these into a new page on my Web site -- but it just hit me that I had not yet posted all the kinesthetic activities I use.… Continue reading Yet again, more kinesthetics!
Geometry book recommendation
A correspondent asks for a recommendation for a geometry book.My favorite by far is Geometry: A Guided Inquiry by Chakerian, Crabill and Stein. This is the book that had the greatest impact on my approach to teaching high school math. It came out in the 1970's, I believe, but was far ahead of its time.… Continue reading Geometry book recommendation
Creative Publications Manipulatives Update
Lab Gear Activities for Algebra 1 and the 3D Lab Gear are no longer available from Creative Publications / McGraw-Hill. Moreover, they have redesigned their Web site, and all the URLs have changed.Pentomino Activities, Lessons, and Puzzles is going out of print, but is still available.Short run: I've updated my publications page, and the Lab… Continue reading Creative Publications Manipulatives Update
Summer Workshops: Early Bird discount deadline
This is the last reminder about my summer workshops for math teachers.* June 1 is the last day to take advantage of the early bird discount for my workshops in San Francisco (Visual Algebra and Hands-On Geometry. In between those, Kate Mackrell will offer a workshop on Cabri 3D.)* There are still openings in the… Continue reading Summer Workshops: Early Bird discount deadline
Pentomino art lesson
A correspondent writes:I am planning to incorporate pentominoes into my art lesson on designing houses. Do you have comments or help on this concept.One possibility is pentomino-tiled floors. There's a lesson on tiling with polyominoes in my Geometry Labs book (Lab 7.1), but the basic idea is straightforward: find ways to tile with each of… Continue reading Pentomino art lesson
Even More Kinesthetic Activities: Distance
(Previous kinesthetic posts: Pascal's Triangle, Graphing)These activities are best done in a gym or playground. Start before discussing circles, perpendicular bisectors, angle bisectors, etc. in a geometry class. It may be best to not do all of the activities in one session.I've done much of this with my own students, but not yet all. I… Continue reading Even More Kinesthetic Activities: Distance
Henri's Math Education Blog 