I would use QR Codes in the classroom for a number of activities. Whether it was literacy, math, science or any subject, QR codes get students used to using technology in a fun and creative way. The student would grab a cube and complete each of the activities as part of a daily task. I would use this in my 1st grade classroom.
Crickweb also hosts numerous interactive literacy games in the categories Key Stage 1 and Key Stage 2. Most are written with Adobe Flash and therefore can be used on any brand of interactive whiteboard. Each month they look through the visitor statistics and update the top ten most popular resources used. Early Years is designed for 4 to 5 year olds. Key Stage 1 is designed for 6 to 7 year olds. Key Stage 2 is designed for 8 to 11 year olds