Print a dragon page for each child. Print a set of cards. Cut the cards
apart and laminate both the cards and the dragon. Have the children pick
a card. Then have them identify the color and number. Then have them
put the corresponding number of discs on their dragon. The first one to cover all the spots on the dragon is the winner.
If you would like, you could use bingo markers instead.
If that is what you choose to do, you won't need to laminate the dragon.
Black and White Version
Here is a resource for the stackable discs.