I have put together a very long list of all kindergarten, first grade, and second grade words (both quarterly sight words and spelling words) on a fun learning site called Spelling city. The lists go in order of how your child should practice! Even if they have passed all of the kindergarten words, have them practice again on lists 1-4 and then go to the K Challenge Lists! Every time they pass a test on a list, move to the next one!
I've also added some fun pictures to our Vowel Town to help kiddos associate specific sounds with certain spellings. Students brought home a black and white version. We will add more spellings to these sounds as the year goes on. For instance, the long e sound can be spelled ee (bee), ei (Reid), ey (key), ea (each)! We will focus on the main spellings for several weeks and add more as students become more familiar with vowel town.