Emphasize the importance of teens spending time with the older person while parents take care of household tasks, or vice versa. Music often brings people together. Often people who have lost much of their memory still can sing old familiar songs. Baking projects also can involve several family members. An adult or older child can mix cookies, while younger children and older adults can cut and decorate.
Touch can be the best communication.
Encourage children to give frequent gentle hugs or to hold Grandma or Grandpa's hand.