I have had this book since the kids were small. Today, I pulled it out and played a few of the games with my son.
The first game has a simple goal. Deal out cards and then try to make each of the numbers from 1-9 by using your cards. You can add, subtract, multiply, or divide in any order. You can use each card 1 time maximum in each equation. We started off with 10 cards. Too easy. 6 cards. Still too easy. Then 4 cards. Really easy except for making 1 of the numbers. I was about to give up when my son figured out the answer! See if you can get them all.
Then we played an even/ odd number game that we renamed unicorn or balls. Not quite as interesting.
I really like this book and plan on continuing with more of the games. As you progress through the book, there are lots of pre-algebra type skills…keeping equations balanced by doing the same thing (or an equivalent) to each side, dividing numbers by themselves to get a number 1 to work with, maintaining what you have by multiplying by 1. Good stuff.
There is also a book/card set called “Fraction Jugglers” that I plan on getting in the future.