Yep, this is pretty much the extent of our vocabulary curriculum. Actually, I would consider this “extra”. Good conversation is all that’s really necessary for a substantial vocabulary. As someone mentioned in the last comment thread, if parents simply speak deliberately–enunciating clearly and being liberal with the words they use, even with the youngest children, there’s no need, as far as I can see, for a formal vocabulary curriculum.
Remember, your children began learning an entire language at birth, and you were their primary teacher. Their vocabulary continues to grow and I submit it can continue to be taught in the same way you’ve been teaching it since birth. (If your vocabulary is limited, you can learn alongside them with this small idea.)
Words used throughout the normal flow of the day are much more likely to “stick” than 15 random words on a sheet of paper that the student is supposed to memorize. It goes the same with any piece of information: experience creates context in which information is best retained.
So back to our board: this contains our WOD (word of the day). Sometimes I leave it for a couple of days. The challenge is to use the word as often as possible in the correct way. Sometimes we have a contest to see who can find the most uses for it.
Fun, simple, quick.
A good place from which to glean WODs is your read-alouds as you come across words that may not be understood. Context is best.