Today I found this book ... and at first I dismissed it totally - I don't need another worksheet book. But I decided to take a look inside. I was pleasantly surprised to find activities that require some thought and often have more than one right answer. I can see using these activities to promote mathematical discourse.
Here is another example from that same chapter. In this second example, I am expecting most students to choose "d." I'll be challenging them to find a different choice!
There are at least 8 different sets of puzzles in the book. Several will inspire good conversation! Can't wait to try it out!