The /oo/ pattern in words can be confusing for beginner readers.
The long oo sound as in boot is learnt relatively easily, as zoo and too are words that children learn early on.
Then they come across words such as look and good or pool and tool, in which /oo/ can have different sounds.
The pronunciation can depend on your accent, of course, e.g. 'look' or 'good' with a Scottish accent can have a long oo sound (- it can be fun and quite enlightening to play around with different accents when teaching children to read!)
You can download the game board and word cards to print onto light card, then laminate for best results before cutting out the cards. You will also need a die (dice) and some tokens or 'movers' (e.g. counters, buttons).
Look Look game board
Look Look game - word cards
This game will be available for free download during July 2015; you are welcome to use it for personal, non-commercial educational purposes.