A guest post by Liz Caffrey: Lab Gear, the Great Connector. She spells out how she uses these manipulatives in 7th and 8th grade pre-algebra and algebra. And a guest post by Meghan Lee: Polyarcs in the Classroom, on how she uses these manipulatives in her high school geometry class.
Making a GeoGebra Slide Show: how I made my presentation on A New Path to the Quadratic Formula — possibly useful for anyone who wants to present some concepts that are best demonstrated with the help of interactive geometry.
No Best Way: I give two examples (one in geometry, one in algebra) where I believe it is a mistake to choose “the best way” to teach something. Better involve your students in a conversation about the options!
Updates to my Math Education Page
I added the outline of a unit on Completing the Square.
What else is new
27 April 2022: I sent out my e-newsletter, with links to recent blog posts and new material on my website.
26 April 2022: I scripted an animation for TED-Ed, A Vampire Riddle. I embedded the video in my new Slumber Theory page.
29 March 2022: I scripted an animation for TED-Ed, A Riddle of Ice and Fire. I embedded the video in my Map Coloring page.
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!
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
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.
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I do not publish guest posts by people I don’t know, so don’t bother asking.
(I am also involved in word puzzles, especially cryptic crosswords.
More on this.)