Let's Operate on Fractions!
Using an area model for fractions*, explain how the image below shows a particular operation is being performed on the given fractions, 2/3 and 1/4.
How does the area model help explain why it makes sense to multiply the denominators and why it makes sense to multiply the numerators?
Click here to bring up the problem in GSP (Geometer's SketchPad).
*Consider using Fraction Bars, GSP, or manipulatives. Submit your idea for an investigation to InterMath. |