Anyone have any good lessons for this objective? This is what we are supposed to be teaching after 5 days of math routines-our first real objective-and it's a doozy! hmy: I want them to have a solid foundation in this. I know of Kathy Richardson's "zib" activities-and they were briefly introduced to 10's and 1's last year-but really have no grasp of the concept yet. Any cool ideas either for the class lesson or workstation activities?