Your students can make all kinds of fractions with just a Hershey bar. Students start by holding the candy bar, ask them "What Fraction is this?" And the should say 1 out of 12 (because the is one whole bar and there is 12 indivisual pieces). Then they take off one of the pieces and eat it. Then ask the students, "Now what is the fraction?" They should say 11 out 12 pieces and do this until the bar is gone (eaten).