У вашего броузера проблема в совместимости с HTML5
When changing your child, have fun with words and sounds together.
Try making funny noises and ask your child to copy you.
Take turns going back and forth, adding new sounds and having fun together.
When your child repeats the sounds you make, they are learning to focus and to listen carefully. You are having a conversation with sounds. Helping to build the connections in your child’s brain for language.