Practice the different sounds that the letters /f/ and /v/ can make. Read out loud to exercise while learning about your new friend, Oliver the Flea. Oliver the Flea is a sweet story for young children. This story is targeted to help little ones pronounce the letters F and V. Reading Oliver the Flea out loud will help exercise the child's mouth "muscle" memory. Regularly reading with your child is proven to be extremely beneficial to the development of young minds. ficial. Exercise your speech with the cute alliteration of tongue twisters.