Sight Words

As a Kindergardener, Ian is learning to read.  Each week he's supposed to learn 4 new sight words.  This week, we've had his words--some, her, would, make--up on the refrigerator so he can get used to seeing them and help us remember to practice them.  A few minutes ago he came up to me and said, "Mommy, I know my sight words so good, I can read them without looking at them!"  And he proceeded to put them behind his back and quote, "Some, her, good, make."  I'm thinking we may not have explained the concept of sight words well enough. :)