Draw and compare models of 3/4 of a pizza pie and 6/8 of the same size pie.

3/4 and 6/8 are equivalent fractions. For 3/4 make a circle and split it evenly into four pieces. Then shade in 3 of the parts. For 6/8 make a circle and split it evenly into 8 pieces and shade in 6 of them.

This will create a model of 3/4 and 6/8

I swear I just answered this ... 6/8 reduced is 3/4 so the pizzas are the same size. One is just cut into smaller pieces