Recent Blog Posts

Commitments: As teachers, is our commitment to mathematics? to our students’ learning? or to enforcing student compliance?

Fraction Rectangles: A brief introduction to a tool which can help students who are learning how to work with fractions: comparing, adding, subtracting, multiplying, and dividing. (The full description of this approach is on my website: Fraction Arithmetic on Grid Paper.)

Seeing is Believing? In which I argue that watching even beautiful “proofs without words” does not yield learning if students are not actively involved.

Links to all the posts!

Updates to my Math Education Page

On my Geometry of the Parabola page, I added a new GeoGebra applet to show the “envelope” construction of a parabola.

On my Sequences and Series page, I added a short video on the use and misuse of formulas for arithmetic and geometric sequences and series.

I added two linked function diagram applets that can be used to make images for copy-pasting into a word processor or presentation software. Composition of functions, and Iterating Linear Functions.

All Math Education Page Updates

What else is new

2-6 August 2021: With Rachel Chou, I will present an online workshop — No Limits! for teachers of Algebra 2, Trigonometry, and Precalculus. Hosted by Menlo School. Register.

19-23 July 2021: I will present an online workshop on “Symmetry: A Unifying Thread Across Grades and Cultures”. The Symmetry workshop has been canceled.

June 2021: My arithmetic games (Signed Numbers, Complex Numbers — my design, programmed by Parisa Safa) are temporarily unavailable. The Snap! website is addressing a security flaw.

Other 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 about 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.)