This is the perfect game to play before a fieldtrip to the Science Center or Planetarium or simply when teaching your class about the Solar System. This particular I have, Who has is for a small group. Cut out the cards (laminate for future use) and give one to each child. Each child takes a turn reading aloud their card and finding who has a match to theirs. A simple, yet fun way to teach children, I have, Who has is effective in most classrooms.