Recent Blog Posts

Learning from Teaching (cont.): a geoboard challenge from a workshop participant, and some thoughts about why work with manipulatives needs to be challenging.

Taking Notes vs. Doing Math: In which I take on a sacred cow — teach math, not note-taking!

Learning from Teaching: A couple of interesting tidbits discovered by participants in my Visual Algebra workshop.

Links to all the posts!

Updates to my Math Education Page

Doctor Dimension: This is a small unit with big ideas mostly about rate of change, including several GeoGebra applets and a selection of worksheets. It can be used in different ways, in grades 8-12. I added a link to another lesson about piecewise functions.

Stairs: This is a Desmos-powered applet that can be used to explore “rise and run”. Unfortunately, it doesn’t work in Chrome on Windows. I added a note to that effect.

Puzzles in Math Curriculum: I combined a couple of blog posts into an article where I break down what makes a good puzzle, and more specifically, what makes a good puzzle in math class.

All Math Education Page Updates

What else is new

17 August 2019: An entire post (about Doctor Dimension, the flat scientist) was missing. I restored it.

5 July 2019: I fixed more broken links, this time in a series of posts in which I challenge the dogmatic stance of teachers who are overly stingy about offering hints to students who are stuck: About Hints, About Hints, the sequel, and Hints! The topic that will not die.

15 March 2019: I sent my e-newsletter out. The main topics were story tables, an argument against the shrinking of geometry, a book review, geoboards + related topics, and the announcement of my summer workshops. Subscribe!

Old News

27 November 2018: I moved my blog into WordPress (here.) I thought the move had happened smoothly, but some graphics, and some entire posts, failed to materialize. Also, many links are broken. If you come across these problems, please notify me, indicating which post had the issue. Thanks!

Henri Picciotto

I have retired from the classroom after 42 years as a math teacher in K-12 — from counting to calculus. I now work with teachers and schools:
    Math Education Consulting

I share instructional materials on my Math Education Page, and my views on math education on this blog

On this page: announcements about new material, updates, etc. on the site; new publications; my appearances at conferences; and my other activities in math education.


My Résumé

Note: All material on this site is copyrighted. You may reproduce it for any non-commercial purpose, as long as you credit me and link to the blog. More info.

(I am also involved in word puzzles, especially cryptic crosswords.
More on this.)