She colored 2/3 of the squares blue. To get 8/12 you would look for the greatest common factor of both 8 and 12. We know that 4x2=8 and 4x3=12. So the common factor would be 4 because both numbers go into 4 evenly. Then you would divide both the numerator (8) and denominator(12). 8/4=2 and 12/4=3 so your answer is 2/3 It would look like this: [tex] \frac{8}{12} [/tex][tex] \frac{divide by 4}{divide by 4} [/tex] =[tex] \frac{2}{3} [/tex]