Do you sometimes surprise yourself with the lengths you'll go to to make your baby laugh? You may find yourself quacking like a duck, for example, or barking like a dog. Your six month old loves turn-taking games, especially those that involve sounds and language. Try letting your baby go first, and then mimic the sounds she makes. When it's your turn, you can teach your child some animal noises like "quack-quack" and "bow-wow", and make her laugh at the same time.