interactive fractions
a1 a2 a3 a4
b1 b2 b3 b4
c1 c2 c3 c4
what fractions look like types of fractions operations 
what fractions look likefifths
This is what two fifths and three fifths look like. Drag some points.
Which two colours make up two fifths?
Which two colours make up three fifths?
Please enable Java for an interactive construction (with Cinderella).