During our second mini-lesson today, we reviewed a Common Core standard for kindergarten. The standard we focused on was "Find the number that is one more or one less than any given number between 0-20". We used our floor number line to help us with this review. I pulled out a number from my bag of numbers and called on a student to find that number. Once the student found the number, I would either tell them to show the class what number is one more or one less than the given number. The student would then take one step forward or backward and tell the class the answer! The kids loved using the floor number line. We are excited to use it again to possibly practice addition and subtraction problems.