Interpret the denominator as the number of equal parts a whole has been divided into

1. Dividing the cake
2. Dividing the cake: How many eighths in one whole cake?
3. Dividing the cake: How many quarters in one whole cake?
4. Dividing the cake: How many fifths in one whole cake?
5. Dividing the cake: How many halves in 1? halves in 2?
6. Dividing the cake: How many quarters in 1? quarters in 2?