This is just a simple reference to help students spell number words correctly. The page can be kept in a reference folder or homework binder. You can use a poster machine to enlarge the student version, or you can put the pages that have the number words in a big font together like a puzzle.
Check out this winter penguin-themed roam the room small group place value activity for first and second grade math that reinforces representing two digit numbers in different forms; base ten, standard form, expanded form, and number word. $