Another way to emmerse students with new vocabulary, is by searching for words in a word find. Here are 2 word searches for Martin Luther King Day (1 for lower el, as well as an upper el version).
Students search for words from left to right and top to bottom. Tell students to start with the first word and look for the initial letter, as well as chunks of letters. They will undoubtedly come across other words while they do that.
Have them highlight the words that they find, as well as cross those words off the list. Work from left to right first, and then any words that they haven't found will probably be from top to bottom. Word searches are great for Daily 5 Word Work, early finishers, sub folders or a fun homework assignment.