There are a range of print and do worksheets covering the five vowels and a few other letters of the alphabet. The sheets also vary from unscrambling words, re-arranging sentences to finding the last sound in a cvc word. These are great worksheets for both early years teachers (Kindergarden) and home schools. I like the initial and end sound sheets as they can be used on a cookie tray or magnetic board with magnetic letters to fill in the missing sounds.
For all the cvc links from BBC
This is the 'g' worksheet - get it here g worksheet from BBC
get the 'u' worksheet here.