Mrs. Lia has 15 pounds of modeling clay. She divides the clay into 1/2 - pound blocks. If Mrs. Lia sets aside 6 of the blocks and gives the rest to the students in her art class, how many 1/2 - pound blocks of clay does Mrs. Lia give to her class?

The number of
1/2 - pound blocks of clay Mrs. Lia gives to her class is