To your little one, counting all the way to 100 seems like such a long journey. You can help make it fun and educational at the same time by introducing numbers in several different ways. These flash cards also help your child understand the difference between even and odd numbers. Work with counting cards to help your child develop the skill of counting by 2's, by 5's, and by 10's. The journey to 100 isn't all that far when there are so many fun ways to learn how to get there! Ages 4 and up.