These are the spelling words that go along with the Treasures Reading Series, by Macmillan/McGraw-Hill, for 2nd grade.
I use them each week when introducing and practicing the spelling words. After the week is over I add them to my word wall, switching them out at the end of every unit.
They have the spelling pattern highlighted for emphasis.
If you are only looking for one unit, stop by my store. I have each unit sold seperately as well.