![The Verbal Math Lesson – Periscope Giveaway!](http://mathfour.com/wp-content/uploads/2015/06/MathFourKnickKnackYackVerbalMathLessonsFI.jpg)
This morning on Periscope, I talked about The Verbal Math Lesson series of books by Michael Levin and Charan Langton. They sent me a handful of these a while back. I took a gander at them and then, like most free stuff I’ve been sent, they’ve sat around the MathShack. Enter the Periscope Giveaway! I’ve… Continue Reading →