Balls are a great toy for development in all areas!
Speech/Articulation: Have your child work on early sounds (up, down, ball, weee). These sounds are good for lip closure.
Language: Playing with a ball will help your child learn early verbs, descriptive words-colors, and feeling words like how it feels-bumpy etc.
Fine Motor/Visual Motor: Have your child pick the ball up and transfer it to the other hand, this will encourage fine and visual motor development.
Sensory: Sensory development can be enhanced by putting balls in water, or a sensory bin to play with. The sensory bin can be full of sand, rice, corn, or even dried beans. Playing with balls outside on the grass is another way to incorporate sensory development with this type of toy!
Gross Motor: To practice gross motor skills, have your child throw the ball and run to retrieve it. Kicking a ball is another great way to reinforce gross motor skills.