Fractions in Disguise

George Cornelius Factor (or GCF, for short) is crazy about fractions. When a brand-new 5/9 goes up for auction, he's the first in line to buy it. The bidding heats up - and then the lights go out. When they go back on, the 5/9 is gone.

Has the mysterious Dr. Brok stolen the fraction and disguised it? Can our intrepid hero strip away the disguise with his trusty Reducer? Equal parts action and humor add up to a wholly entertaining introduction to simplifying fractions. 32 pages.