Usage: Emotions like afraid are best introduced through real life experience. When you see something that baby finds scary, such as a snake, then you can make the sign and feign being afraid with your body language. Once baby has grasped the meaning of the sign, you can use the flash card to help reinforce the meaning of the sign.
To learn how and when to teach the sign, take a look at the afraid page for a video, diagram, and tutorial.