Wonder Words is great value for money that is easy to use and easy to implement with any existing program. Students love the activities that are quick and fun. The worksheet activities are fun and need very little preparation, as you just need to print them. I use reusable plastic sleeves and place the worksheets in them for the students to use with whiteboard pens. They also love the interactive books with the sight words in them. No more searching for texts that target specific sight words.