Yes, That's My Mother! by Marsha Landau, illustrated by S.D. Monahan has been published online

Easier than reading it here! You can read online or download a PDF version at
Yes, That's My Mother! by Marsha Landau, illustrated by S.D. Monahan

Factoring Trinomials

A discussion on the Facebook group "Math Teachers Professional Learning Network" prompted me to create two videos (quickly, and not at all professionally done!) introducing the method I've taught for more than 50 years.

Here they are:

I hope you find them useful.