This set of cards will help your students practice on creating a number line. Also, it will help them identify the odd and even numbers. The numbers are color coded, even numbers are red and odd numbers are black. Students will notice the counting patters as well for the 5's and 10's. Those numbers have a star on them to be easily identify by students. This set of cards can be used in a math center, it give you the ability to make it easy or make it a little more complicated for your advanced students.