There are many ways to help your child develop his reading skills. Sight words can be practiced using flashcards, which you can easily make at home using index cards. Use pictures, symbols and colors to help reinforce the word.
Adding fun activities like writing the words in shaving cream, in the sand, on a chalkboard, or using magnetic letters may be motivating for your young learner, and is a good way to help him feel the shape of the word.
Also, point to words in stories you are reading. Stop on a familiar sight word (like: the, that, this, and) so your child can fill in the word.