@mathsjem I think anyone who teaches a math methods course to future teachers is going to find a lot to love in this book.

@mathsjem Check out the sample chapter, on subtraction. The Nines Complement Method is new to me and hilarious. I love it:

@mathsjem Here is my first draft of a kid-friendly activity about this method. Ideas or revisions are welcome! Much thanks to @mathsjem 's book for the strategy.

@mpershan Thank you! :)

@mathsjem Thank you for writing it!

@mpershan @mathsjem Our textbook teaches this as an option (2004 edition, don’t ask)

@Dsrussosusan @mathsjem Which textbook?

@mathsjem By the way, one thing this method reminds me of is Keith Conrad's awesome set of notes about the analogies between polynomials and numbers.

@mpershan @mathsjem @MrsP_ofLHS May be of interest

@mpershan @mathsjem Where polynomial work has direct analog in arithmetic, use it! I write 21 x 32 ask them to walk me through the steps. I make mistakes, forcing them to instruct me about place value. 42 +63 is wrong! Then multiply (2a+1)(3a+2), notice how nicely partial products match...

@mpershan @mathsjem When I teach polynomial long division, I often expose a few high school kids to arithmetic long division for the first time. There's so much hate out there for a great way to practice estimation, multiplication, and subtraction, and reinforce place value and numbers sense.

@mpershan @mathsjem Students are often surprised that the F method is something they already knew

@mpershan @mathsjem I always used area/box to explain this, but I like the connection to the standard mult algorithm. And according to Amazon my book will be here tonight.😀

@mpershan @mathsjem One of my students “invented” this multiplication method in class a few years ago. I was blown away! We now refer to it as Jared’s method”.

@mpershan @mathsjem I love this method. My kids have trouble doing this but I keep pounding. It is so much like their lower grade multiplication. I have been using this for about 5 years. I just looked one day and said I can do this just like multiplication. My weaker students love this method.

@mpershan @mathsjem This is one of several methods that I show Ss. This shows that if they can multiply in grade school, they can still multiply now. Then I let each year pick the method for the year. Even if they choose another method, they may use this for trinomials.

@mpershan @mathsjem Let the past (aka foil) die

@mpershan @mathsjem I remember the first time I saw the “column method”. It blew my mind. And then I saw the area method and never turned back.