I use these worksheets on Fridays for 30 weeks of school (see my other sight word worksheets for the other days of the week).
There are 30 sight word worksheets in this unit. Each week builds on the previous weeks through review of words that the students have already learned. The words appear in this order:
a, I, like, the, and, go, had, he, see, has, you, we, of, in, am, at, to, as, have, is, it, can, his, him, on, did, girl, for, but, & up