Crayons teach even and odd numbers 1 to 10! Children will first learn odd numbers, followed by even numbers, and then all numbers from 1 to 10. This is a nice .\rbr\rbrLearn counting to 10, numbers 11 to 20 and even & odd numbers with three lessons featuring number mugs, a talking phone and crayons.\rbr\rbrCrayons teach even and odd numbers 1 to 10! Children will first learn odd numbers, followed by even numbers, and then all numbers from 1 to 10. This is a nice .